At present, there are four generations of AppleWatch. The latest one is AppleWatches 4, and all kinds of functions are very convenient. Every generation has made a little progress, and the difference is not very big. At present, the first generation of AppleWatch is inductive charging, and AppleWatch can make phone calls. Apple Watch can use Siri and can connect to iPhone to send and receive text messages.
On the processor side, AW4 is upgraded to 64-bit dual-core S4 processor +W4 wireless chip, which is twice as fast as S3 processor, while AW3 adopts 32-bit dual-core S3 processor +W2 wireless chip. As for the heart rate sensor, AW4 was upgraded to a heart rate sensor, and an electrode heart rate sensor was added. AW3 only supports optical heart rate sensors.
Apple Watch has three series cases of aluminum alloy, stainless steel and gold, which can be matched with various straps at any time. It has built-in sensors, such as heart rate sensors, which can detect human health. Other things you can do on your watch can also be done on your mobile phone.
The fourth-generation AppleWatch is designed with rounded corners as a whole. The 40mm screen is 35% larger than the previous generation, and the 44mm screen is 32% larger than the previous generation. In order to adapt to the curved screen, the UI adopts a brand-new circular interface and design, and the main applications such as heart rate and exercise are updated, and the dial of the watch is added, and the back cover is made of sapphire glass.