Product list
s20

4.0 Bluetooth Health Wristband - SF1

1 Connect APP directly
2 Bluetooth 4.0 version 
3 0.69" OLED time display
4 Anti-lost 
5 Pedometer, Calorie Measurement
6 Sleep monitoring
7 Vibration funtion: Anti-lost, Warning signal, Call Alert
8 The weather information
9 Water resistant IP67
Accessories: USB charger, Manual, gift box