Not allowed.
Some professionals analyze that no matter which measurement principle is used, with the existing technology, smart bracelets have not been able to do an accurate measurement of blood pressure.
And the smart bracelet is a new thing, because it does not belong to the medical equipment, the country has not yet had the relevant testing standards. Dr. Wang Guofu said that the results of the smart bracelet measurement is for reference only, and can never replace the sphygmomanometer as the basis for diagnosis and treatment. Because for hypertensive patients, different blood pressure values, doctors will have different medication programs.
Expanded Information
Legally marketed and illegally sold
Blood pressure monitors registered through China's State Food and Drug Administration (CFDA) can only be legally marketed and sold in China_1]_.
On the other hand, any blood pressure measurement product that is not registered by the China State Food and Drug Administration (CFDA) is illegal to market and sell within China, regardless of the manufacturer's claim that its product is a medical device.
Accuracy of blood pressure watches
Strictly speaking, blood pressure monitors registered through the China National Food and Drug Administration (CFDA) are accurate.
Baidu Encyclopedia - Watch Blood Pressure Monitor
And "intelligent" is the trend nowadays, smart bracelet/smart watch is also a member of the smart health, indispensable in the healthy life. But the price difference between the two is large, a few hundred dollars of smart bracelets and thousands of dollars of smart watches, which is more cost-effective to buy? And how to choose?
One, practical function
Most people buy smart bracelet/smart watch, is to rush to the practicality.
Simply put, the smart bracelet is very much like a life aid, it is lightweight with a small screen, and can locate, record heart rate, exercise, pedometer and health management, etc.;
Smart watch is more like a healthy life butler, not only record the heart rate, exercise, but also monitor the heart and blood pressure, sleep, electrocardiogram, blood oxygen and internal organs information and other health data.
From the function point of view, the smart bracelet single function, but the endurance is strong, generally can reach about 20 days; and smart watches can do 7 days even if excellent!
See here, many partners said: today the vast majority of new smart bracelets can achieve more than 90% of the smart watch function, while wearing more comfortable. In this case, there is still a need to buy a smart watch?
So it must be said that the degree of specialization of the smart bracelet / smart watch!
Second, the degree of professionalism of the device
Here for the time being, let's not mention the smart functions of the smart bracelet/smart watch, such as: making calls, music playback, alarm reminders, etc., because many people say: if it is just to make calls/payments with a smart watch, it would be more appropriate to change to a new cell phone!
So here we are only discussing the degree of specialization of smart bracelets/watches on health data monitoring, is the data monitoring of both reliable and "heart"?
Generally speaking, the standard of smart bracelet data monitoring is the "PPG photoelectric sensor", which generates heart rate data by sensing the change of blood vessel volume when blood flows through the reflected light; the blood pressure value is estimated through the sensor to collect the pulse wave of the wrist, and then use the specific formula to estimate the blood pressure value.
The smartwatch uses "PPG (photoplethysmography) + ECG (electrocardiography)" technology, which is currently recognized by the industry as a more rigorous measurement technique in wearable solutions.
Looking only at blood pressure data, some medical literature says: PPG photoelectric method of data collection, the current accuracy of the deviation is about ± 10mmhg, and to be in a specific scenario. The smartwatch's PPG (photoelectric method) + ECG (electrocardiography) technology, data accuracy will be higher than simply using PPG technology, its error can be controlled within ± 5mmhg!
In comparison, smart users will recognize the health data of smartwatches more than smart bracelets!
Third, the service system behind the product
Whether it is a smart bracelet or a smart watch, many people believe that it is a health data collection tool, why is the pricing of smart watches generally high? In addition to monitoring data more professional and accurate, there is another point that many people directly ignored.
We all know that smart bracelets/watches can visualize health data, but smart watches have another identity, it is also a part of the health management ecosystem, in the data visualization at the same time, for abnormal data, combined with big data analysis, to give professional health conditioning advice.
So it looks like you're just buying a smartwatch, but the core of a smartwatch is the service system behind it, which includes "health data analysis", "professional doctor health guidance", "disease early warning" and "professional health management".
Compared with smart bracelets, these smartwatches currently have an irreplaceable core value of real-time disease warning and predicting the risk of disease in the long term, while the APP background daily and weekly updated health reports, including: daily reports, exercise, sleep, internal organs health, mental health, etc., and to give targeted health conditioning advice, so that users can better realize their own health status monitoring and management; When the user encounters a sudden emergency, the smartwatch's positioning and SOS emergency call function can provide timely and effective professional treatment services.
It can be said that there is no comparison, there is no harm!
So a few hundred dollars of smart bracelets and a few thousand dollars of smart watches, in the end how to choose? This scores personal needs, if you usually just jogging clock and simple data monitoring, smart bracelet lightweight and long battery life, already enough; if it is more concerned about their own health information and focus on health management, smart watches are obviously more appropriate!
Smart watches and bracelets, which one measures heart rate more accurately?
With the development of smart wearable devices, smart bracelet has become a well-known health tracking products, which can not only record our daily activities, but also monitor the quality of our sleep, and the new smart heart rate bracelet is to provide us with the function of heart rate monitoring, we have a greater help to our health of the movement, then smart heart rate bracelet is through what way to monitor the human body heart rate dynamics? The following for you to answer.
Generally speaking, the way of heart rate monitoring is usually divided into three kinds:
One is the photoelectric transmission measurement method, the principle is that the sensor of the bracelet in contact with the skin will emit a beam of light hitting the skin, and the measurement of reflected/transmitted light. Because blood absorbs a specific wavelength of light, each time the heart pumps, that wavelength is absorbed in large quantities, and in this way the heartbeat can be determined. The downside, however, is that it consumes a lot of power and can be interfered with by ambient light. Most of the smart bracelets or watches on the market today that monitor heart rate use the photoelectric transmission measurement method.
There is another way to test the ECG signal method, the sensor of the bracelet can determine the user's heart rate by measuring the electrical signal of the contraction of the heart muscle, the principle is similar to the principle of ECG. The disadvantage is that the circuit is more complex, occupies more PCB space, is susceptible to electromagnetic interference, while the sensor must be close to the skin, placed in a relatively fixed position, so it is difficult to have a bracelet to use this measurement method.
On top of that, there's vibration measurement, which has only recently come out. Because every heartbeat will cause the body to vibrate, through high-precision sensors to capture this vibration, and then after signal processing can get the heartbeat, in general, smart cushion or smart massager products will be used in this measurement method, the bracelet is relatively rare.
The accuracy of the heart rate has little to do with the bracelet or watch, but with the measurement principle and algorithm.
There are currently two mainstream heart rate measurement methods, one is the photoelectric transmission measurement, that is, there is a green light flashing on the back case of the watch and bracelet from time to time, using the absorbance of the blood hemoglobin in the blood vessels to measure the pulse, and through the algorithm to be converted into a heart rate, most of the watch and bracelet are this;
The other is the heartbeat current measurement, which needs to be connected to the external heart rate belt, and the heartbeat current is sensed by two electrodes and converted into a heart rate through the electrodes of the watch and bracelet. The other is the heartbeat current measurement, which requires an external heart rate belt, sensing the heartbeat current through two electrodes and converting it to heart rate through an algorithm.
If you're not a professional sportsman, an ordinary watch and bracelet will do, but a professional sportsman should have a heart rate belt.
Another factor that affects the algorithm is the algorithm, the general big brand GARMIN, Sonata, Huawei and some other smart wearable brands are good, large shipments, more accurate data.
1, smart watches and smart bracelets belong to the same category of products, they all belong to the smart wearable devices. 2, smart watches and smart bracelets can be seen in the name of the difference between the volume of the smart watch will be relatively larger than the volume of the smart bracelet in general, of course, the function will be more complete, a lot of smart watches with a GPS module, you can answer the phone, play music, navigation, send and receive Information and other functions, while the function of the bracelet is much simpler, its main embodiment in the pedometer, sleep monitoring, communication reminders, high endurance, etc., focusing on different. 3, for your main sports and fitness needs, you can consider buying a sports smart bracelet, first of all, the function is enough to meet the needs of the other more lightweight. Cost-effective
As a person who has bought 3 sports bracelets, I'll talk about those things to buy a bracelet.
On the accuracy of heart rate measurement, which is of great concern to the subject, the three bracelets I've used have had no problems, even if the error is not much. For example, after I climbed the stairs, my heart rate increased significantly to 85 beats per minute, while normally my heartbeat is usually less than 70 beats. When I sleep my heart rate slows down significantly to around 65 beats.
I've measured my heartbeat against my pulse, and it's not far off from the rate measured by the bracelet. In this regard, I believe most of the bracelets on the market are compliant.
If the main need of the subject is to measure the heart rate, you can buy any branded bracelets and sports watches on the market, such as Huawei, Huami and Xiaomi.
But the subject didn't mention any specific requirements for the price, so I'll nominate a few of the better-selling, cost-effective bracelets/watches on the market! Price from high to low, please show your picks.
1, Huawei GT2 Porsche design models
Atmospheric appearance and fashionable, full-featured, with GPS, running without a cell phone can also record the path. Suitable for successful people and tycoons who are not poor, please feel free to buy.
HUAWEIWATCHGT2 Porsche design models Huawei watch sports smart hand
4688.00
2, AppleWatchSeries6GPS models
Apple watch, suitable for fruit fans and Apple family bucket users, the appearance of the appearance of more inclined to the look of the sports watch, looks younger and more wealthy Vitality. The downside is that the battery life is average.
AppleWatchSeries6 smartwatch GPS model 44mm dark sky gray
3399.00
Of course, the Apple family also has a cheaper price of another. AppleWatchSEGPS model, like Apple devices, and budget is not enough, you can choose this.
AppleWatchSE smartwatch GPS models 44mm dark sky gray aluminum metal
2399.00
3, Huawei GT2 ordinary models
Functions and the above one is not too much difference, the should have, but the price is a lot more affordable, the appearance of the fashionable, very design. It's suitable for young people who earn a decent income and are more concerned about affordability.
HUAWEIWATCHGT2 Huawei watch sports smartwatch two weeks long battery life/
1488.00
4, glory watch 2
Newly listed watch, I went to the counter to look at the counter, there are two specifications of 46 and 42 to choose from, suitable for boys and girls. The appearance is very simple and steady, the function is very full, the price is not expensive, suitable for programmers to wear.
Glorious Watch 2 MagicWatch2 sports smart bracelet 6 Bluetooth call men and women into
1099.00
5, Xiaomi COLOR Sports Edition
Cheap, good-looking. However, it is said that the firmware update is slow, and the range is average. Called a large size bracelet. I went to Xiaomi House to see the real machine, the appearance is really beautiful, suitable for girls.
Millet Watch Color Sport Edition Elegant Black Blood Oxygen Detection Multi-function NFC Ultra
6, Glory Watch ES and Glory Bracelet 6
Glory Watch ES 10 days of battery life smart HD large screen fast charging 50 meters waterproof sports men
549.00
Glory Bracelet 6 NFC Edition Meteorite Black 1.47-inch 14-day battery life 10 sports
289.00
I put the two of them together because they have pretty much the same features, just different appearances. The former is bigger, more expensive, and a little more versatile.
I bought the bracelet 6 myself, for a detailed review, please move to my other reply, where I wrote in detail why I chose this bracelet, and what it's like to use the bracelet.
There are many ways to save a worker, one of the most effective is not to spend money, according to their own wallet to choose the right watch/bracelet is right.
Smart watches, bracelets and specialized heart rate bands I also have, I measured at the same time when I found that the difference between these kinds of not very much If you buy, you can buy a big brand, there is a guarantee
Wristbands and watches which sports function is good?
Sports bracelets and sports watches are typical representatives of smart wearable, bracelets are relatively cheap, from one or two hundred dollars up to a few hundred dollars, while the price of sports watches compared to the bracelet is a lot more expensive, the cheap ones are also large hundreds of more than a thousand dollars, the expensive ones are several thousand dollars, how big a difference between the two of them in the end? How should runners choose a bracelet or watch?
The bracelet represents the low-end
Does the watch represent the high-end?
In the eyes of many people, bracelets often mean cheap and simple functions, while watches are synonymous with high-end atmosphere, is this really the case?
If placed a few years ago, there may be such a situation, because the bracelet of that era is almost only step counting function, but today's bracelet, has completely got rid of the defects of a single function, smart wearable as well as the development of the sensor's own technology, so that the smart bracelet has realized the technological upgrading of bracelets have been achieved, bracelets have realized more than 70-80% of the functions that can be realized by the sports watch.
For example:
Watch is color screen, bracelet can also be color screen;
Watch screen pixel is high, bracelet can also be high pixel;
Watch can watch the time, bracelet can also watch the time;
Watch can measure the heart rate, bracelet can also measure the heart rate;
Watch can record the mileage running, bracelet can also Record running mileage;
Watches can be mobile payment, bracelet can also be mobile payment;
So from the function alone, it is not too much to say that there is no essential difference between the bracelet and the watch, in fact, from the engineering point of view, the integration of the chip, integrated circuit boards, sensors together is called smart wear.
Some people say that the bracelet and watch are mainly different in appearance and shape, the round is a watch, the ring is a bracelet, which is probably due to the earliest watches and bracelets manufactured into the current shape, so we agreed to call it so, the shape is one of the characteristics of the product, but not to judge the product is good or bad, grade, function of the essence.
Bracelets and watches are the most important and core hardware components of wearable devices for a long time to come, and there will be more wearable forms, such as smart hardware worn on the ears, arms, legs, or other parts of the body, now or in the near future.
But in general, from the user experience, wearing comfort, accessibility, and the user at any time to view the point of view, the bracelet watch still has an important irreplaceable advantage.
From the wearing comfort
Hand ring may still have some advantage
Watch due to the dial is larger, so from the wearing fit may not be as good as the hand ring, especially some outdoor or triathlon watch dial is huge, due to the built-in a variety of sensors is also particularly thick.
For men, there is a more obvious sense of heaviness after wearing, of course, many people also enjoy this feeling, while the bracelet is different, the bracelet is born with a ring-shaped appearance, the core of the bracelet can be designed as a curved, which can be better adapted to the wrist, so wear feel more lightweight and comfortable.
If there is little difference between the overall experience of a watch and a bracelet when worn on a regular basis, then the sleep mode measurement of a bracelet is slightly more advantageous than a watch, and the feeling of sleeping with a slightly heavy watch is not as good as that of a lightweight bracelet.
Functionally speaking, the watch is relatively more powerful
But not all the functions users can really use
Whether there is a difference between the function of the bracelet and the watch, this is a key question.
Smart watches on the market can be roughly divided into two categories:
One category is based on mobile operating systems such as Android and Apple, with independent call and Internet functions, which is essentially a scaled-down version of a smartphone, and can be regarded as a cell phone in the shape of a watch;
The other category does not have an independent mobile network module, and must be connected to other smart devices. The other type is one that does not have an independent mobile network module and must be connected to other smart devices to receive notifications of incoming calls/text messages from smartphones and to realize Bluetooth transmission with cell phones. Bracelets are broadly similar.
Watches are usually more expensive, from the point of view of meeting the user's feelings, manufacturers will also be in the functional design compared to the bracelet, to provide more functionality, the watch round dial relative to the bracelet strip design is larger, so you can build more sensors, while the bracelet is relatively limited in the internal space and can not be made the more thick, so from the functionality, the watch in the design of functionality is still a little bit better than the bracelet.
Of course, the powerful function is one aspect, but the user can not fully use the watch's rich function, which becomes another industry pain point - how to let the user to make full use of the powerful function of wearable, to get a better user experience.
In fact, a significant proportion of users in the actual use of the watch, or only 20-30% of the functions, many of the functions of the user basically rarely used or simply can not be used, so for many pragmatic consumers, more simple, more direct bracelet, but also to achieve most of the sports watch has the function, the key is the price is also cheap, why not do it?
Which one measures heart rate and other indicators more accurately
Measuring heart rate, distance and other important parameters is not accurate depending on the bracelet watch itself, but depends on the measurement accuracy of the sensor technology and algorithm optimization.
As a modern bracelet and watch mainstream use of photoelectric technology (PPG), let's just say that everyone is not very accurate in high heart rate measurement.
There are many factors affecting the accuracy of heart rate measurement of photoelectric bracelet watches, including the displacement of skin, muscles and these non-beat physiological substances, skin color, light signal data is usually in the same interval with the swing frequency or step frequency (140-190 steps/minute), wearing parts, etc. These factors often lead to the lack of photoelectric technology in the measurement of the accuracy of the high-heart-rate range, and in the medium-low heart rate range are generally accurate. range is generally accurate.
Continuously optimizing the heart rate algorithm to improve the accuracy of heart rate detection is also a problem that wearable manufacturers are trying to solve.
Measurement of running posture
Watch bracelet each show their skills
Whether it is a watch or a bracelet, worn on the wrist, is destined to be able to measure the running posture parameters are very limited, generally can only provide the step frequency stride parameter (stride frequency according to the arm swing cycle or induction of the vibration cycle, stride according to the speed, stride frequency inverted), then the runner hopes to get more running posture parameters should be How to get to the manufacturers to show their skills, show the technical strength of the time.
Some manufacturers have built-in motion sensors in the heart rate belt or fix the sensor in the waist, as this time fixed in the torso, so that the center of gravity can be measured to vacate the height of the running posture parameters such as time to touch the ground.
As a top domestic high-tech enterprise, Huawei has always had a pretty good performance in the wearable consumer market, Huawei officially launched a running bracelet to the market in 2018, that is, Huawei Honor Bracelet 4Running Edition, and the latest version is Huawei Bracelet 4e.
Huawei's solution is to wear it as a normal bracelet on the hand usually, and when you're running through an accessory that snaps onto the laces of your shoes to measure your running form.
The bracelet can measure running posture parameters such as landing mode, impact force, touch time, flopping amplitude, swing angle, etc. Especially for the measurement of the foot's movement pattern during running, the data is rich and comprehensive, which can effectively help the public to evaluate the running posture.
And Huawei in the bracelet algorithms also continue to innovate, Huawei bracelet 4e in addition to running to measure the running posture, playing basketball when fixed on the shoes, but also can measure the height of the jump up, the number of jumps, and other data, Huawei will develop more in the future based on the measurement of the mode of different sports projects bracelet.
Force wearable later on Huawei to lead the industry
In the field of wearable, Huawei is not the earliest entrant, but Huawei joined, relying on the strong R & D manufacturing capacity, Huawei, whether in terms of shipments or product quality, etc., undoubtedly has become the industry leader, Huawei is the minority of the bracelet and watch side by side, are able to provide users with hard products, Huawei is a minority of bracelets and watches, both can provide users with hard products. Walking on two legs, both legs are walking fast and good one of the manufacturers.
As a high-tech enterprise with a strong engineer culture, Huawei's extreme pursuit of product innovation and willingness to invest in research and development are the fundamental reasons why Huawei's bracelets and watches are rapidly iterating and continue to amaze users.
In the Huawei Xi'an Research Institute Sports Health Science Laboratory open day activities, many media, including Wisers, were invited to visit one of Huawei's professional laboratories currently engaged in the research and development, testing and validation of wearable products, and we have witnessed a large number of Huawei Sports Health Science Laboratory's advanced scientific research equipment.
Zhang Wei, President of Huawei's Wearable Product Line, looks at the future of wearable products
Mr. Dai Jiansong, author of the Injury-Free Running Method, was invited to participate in the Wearable Roundtable Discussion
The exercise cardiopulmonary test platform is mainly used for aerobic capacity and walking and running tests
The optical capture test system is mainly used to analyze complex sports movements
Golf simulation equipment provides a basic test platform for the golf function of Huawei's bracelet. Golf simulation equipment provides a basic test platform for Huawei's bracelet golf function
In the Wearables Reliability Test Lab area, engineers use mechanical equipment and software tools to simulate many extreme use scenarios, and carry out destructive tests on the service life of Huawei's smart wearable products' hardware and software.
There are hundreds of these tests. A quarter of these tests are extreme destructive tests, which effectively help to improve the product and enhance product reliability and performance, and after reading this, you know why Huawei's products are of such high quality.
It is in the strong R & D support, in the past year or two, Huawei wearable product line of richness and iteration speed have made great progress, Huawei GT series watch has become one of Huawei's explosive products, and established a good user reputation.
What are Huawei's innovative features compared to other wearables?
The vast majority of Huawei's bracelet watches now offer a unique heart health detection function, which on the one hand allows for long-duration heart rate detection, and on the other hand allows the public to further measure the heart's workings when the heart is feeling unwell, as well as when it needs to be on a regular basis, thus providing a practical tool for early screening for atrial fibrillation.
The results were released at the annual meeting of the European Society of Cardiology and the World Congress of Cardiology, which is undoubtedly an important fruit of the perfect combination of wearable technology and public health, the future of wearable not only provides exercise testing and recording, but also provides a powerful tool for the public's daily monitoring of health behaviors and health risk screening.
In addition, Huawei's soon-to-be-launched WATCHGT2ProECG model is equipped for the first time with ECG detection, which can directly measure ECG signals through the dial back electrode and side electrodes;
On this watch, Huawei has integrated and innovated photoelectricity (PPG) and electrocardiography (ECG) technologies, and established the vascular detection function, which, after being compared with atherosclerosis detection
Vascular function is an important indicator of cardiovascular health, which used to be tested only with the help of expensive equipment, but now this watch can directly measure your vascular health, which is a great innovation brought to people's healthy life by technological progress.
Engineer demonstrating the accuracy of the WATCHGT2ProECG model's vascular function detection
Huawei attaches importance to the user experience, and in response to some runners' feedback that the accuracy of Huawei's bracelets or watches sometimes declines when they measure high heart rates, Huawei said at the open house that it would make a big improvement to the accuracy of its heart-rate measurements for new products that will hit the market next year.
There is no such thing as a perfect product, but only a manufacturer that listens to its users' opinions and continues to reflect on and improve itself, and Huawei's frankness and patience in listening to its users in this regard is to be commended!
It is also hoped that Huawei will provide the public and sports enthusiasts with more accurate, smarter and more diversified wearable products in the future!
Should runners choose a bracelet or a watch
Finally, we'd like to answer the key question for runners, should they choose a bracelet or a watch?
Watches don't necessarily mean high-end, and similarly, bracelets don't necessarily mean low-end. Bracelets are becoming more and more powerful, and have become virtually indistinguishable from watches in terms of their functionality.
For the 60-80% of ordinary runners who just use it to record their running mileage and heart rate, a few hundred dollars of bracelet is enough to meet the functional requirements;
And for the 20-40% of senior runners who need more complicated functions, such as setting up a training program, etc., then a more complete and powerful watch is the best choice.
Because a watch is still much more powerful than a bracelet in terms of interaction design and functional diversity, which is also reflected in the price.
But, unfortunately, 80% of the mass runners only utilize 20% of the functions of the sports watch, and the remaining 80% of the advanced functions are not used, so manufacturers are not only to sell the product, but also to pay more attention to user service.
How to make users better use of the product, so that they can enjoy the healthy and beautiful life brought by science and technology, for all manufacturers is not a small topic.
Because the consumption of people's aspirations, trends and expectations for a better life, from a general rational consumption point of view, the beginner runners bracelet is good enough, and the watch is more suitable for mature or senior runners.
Summary
Bracelets and watches are constantly being upgraded, and their functions are becoming more and more perfect and powerful. Sports bracelets are enough to satisfy the general public's needs for general sports records, while watches are more powerful in terms of interactive experience and function settings, and are more suitable for in-depth sports enthusiasts.
The bracelet and watch are both classic representatives of wearable, their positioning, functions, adaptable users, etc. There are some differences, and the two can not replace each other, so as to meet the needs of diversified users.
Do you choose a bracelet or a watch?
Tell us your opinion and your choice.