When is information, HR / steps / calories, stored?
The information is stored when any of the fields, except the timestamp, differ from the previous line.
Wed, 2 May, 2018 at 3:00 PM
Does the device detect sleep and does it detect REM?
The device detects sleep:  sleep_class 0 – awake 1 – light sleep 2 – deep sleep So no REM, but light / deep sleep are seen.
Wed, 2 May, 2018 at 3:03 PM
Which data can be pushed to the device?
The Bluetooth protocol (datasheet section 3.6) does define some write characteristics that can be used to push information to the device. These include but ...
Wed, 2 May, 2018 at 3:07 PM
How are HR, accelerometer and RRI data transferred over Bluetooth?
The device transfers HR data through Bluetooth by 3 ways: 1. Real-time HR and RRI data every second using open BLE GATT Heart Rate service 2. Real-t...
Wed, 2 May, 2018 at 3:25 PM
How is proximity detection information available?
The device sends worn status information as part of Activity Data Characteristic of Device Control Service (see datasheet section The worn status...
Tue, 14 Aug, 2018 at 12:38 PM