No matter photoelectric method or photoelectric+ECG method, the blood pressure data obtained are estimated by specific calculation formulas. With the existing technology, smart bracelets can't accurately measure blood pressure, let alone serve as a basis for diagnosis and treatment. Therefore, for people wearing smart bracelets, its data can only be used as an auxiliary reference. Only by combining other clinical symptoms can professional doctors provide more valuable health reports and health solutions. In addition to recording exercise, the smart bracelet also has a major function of monitoring sleep.
Many smart bracelets on the market infer the user's sleep quality by sensing the user's hand state. When wearing this bracelet, it is often not close to the wrist, so it is impossible to detect the oxygen saturation, and the chip position is not fixed, so it is impossible to accurately capture the pulse. When the user is physically active, the bracelet defaults to light sleep, and when it is still, it defaults to deep sleep. And such records are not accurate.
At the same time, the quality of sleep cannot be based on the length of sleep. As long as you wake up feeling refreshed, energetic, quick-thinking and full of energy, it proves that your sleep quality is high. In the process of daily sleep, the change of body oxygen value is more worthy of attention. High blood oxygen content during sleep indicates smooth breathing during sleep, while low blood oxygen content indicates poor breathing, which may lead to sleep breathing disorder.