Switchable Display Bluetooth Bracelet  W194

Functions:

1.Bluetooth4.0 low  energy wireless transmission                                                                          

2.Effective transmission distance around 10M                            

3. E-Ink Paper Display                                                                                             

4. Use 3d accelerometer sensor to track sleeping quality , step, distance and calculate calories                      

5. Save activity data automatically every 5 minutes

Features:

Indirect charging

Super slim E-ink Display

long Standby time

Fasion business type design

Switchable display background