Specification:
Colour: Black
Material: ABS + TPU
Screen size: 0.42 inches
Battery: built-in 70mAh lithium battery (included)
Charging mode: USB charging
Charging voltage: DC 5V
Charging time: 2 hours
Standby time: 7 days
Bluetooth version: 4.0
Bluetooth distance: 10 meters
Working temperature: -10 - 50 ℃
System compatible: Android5.0 / IOS8.0 and bluetooth in 4.0 or more
Function: time display, power display, step, calories, sleep monitoring, heart rate monitoring, blood pressure monitoring, information push, shake it off,etc.
Wristband length: 24cm
Wristband width: 15mm
Host size: 40 x 16 x 11mm

Packing List: 
1 x Smart Sports Bracelet 
1 x USB Charging Cable 
1 x Manual