Basic functions: motion monitoring, sleep monitoring, vibration warning, heart rate monitoring.
Usage required for specific aspects:
（1）Message push, call reminder, call rejection, oxygen saturation monitoring.
（2）GPS location, voice call, voice assistant NFC and mobile payment, decorative, somatosensory interaction.
（3）Continue: 3-30 days, Super long and fast charging.
（4）Waterproofing: IP65-IP68 class waterproofing.
（5）Data transmission: synchronous data speed, now basically using Bluetooth 4.0 protocol.
The speed at which data is transmitted from the fitness tracker to the mobile phone APP is related to the size of the data and the fitness tracker hardware and software. The speed is fast and slow. If you can use WiFi to transmit data indoors, you can automatically switch to Bluetooth transmission outdoors. Of course, this is just an idea and you really hope that it will be implemented in the future.
Saying that you now care more about which function of the fitness tracker? Welcome to leave comments to exchange and exchange.