Health bracelet     parameters: 

Appearance size :                                 43mmx17.1mm 

Screen size :                                          0.91 

Screen type:                                          OLED 

Product:                                                weight 31g 

Net thickness:                                       9.22mm 

Color :                                                  Black， blue， green， yellow， red

Battery:                                                 Lithium battery， Rated capacity of 80AMH

Charging port tail plug :                          NOKIA Standard

Application system :                              IOS /Android 4.3 or above

Standby time:                                       32 Hours

The Bluetooth  standard:                      4.0+EDR