Dfit D21 - Real-time Heart Rate; Settings

heart rate, yesterday data and data summary will be shown on the ap interface.
4. Real time Heart rate
Start heart rate testing,it can record your heart rate for whole day.
5. Settings
Used to set up all functions on ap.
a. Bluetooth, used to connect wristband Bluetooth
b. Sync, used to sync wristband date
c. Incoming calls, when you turn on the function, the watch rings and vibrate with icon
remind.
d. Time reminder: Alarm clock, when you turn on the function, wristband will remind you
regularly.
e. Sit notification, when you turn on the function, the watch will remind you to do some
exercise.
f. Screen save timer, used to set up the time for screen bright.
g. Erase user data, used to erase the historical data in the wristband.
Warranty Card