Specifications:
Model : B7
Material: Silicone wristbands + plastic shell
Dimension : 230 * 25 * 13 mm
Net weight: 41 g
Screen size: 0.73 inches
Screen resolution: 64 x48
Bluetooth version: Bluetooth 4.0
Bluetooth range: 0 to 10 meters
Battery: 100 mAh
The charging interface: MicroUSB interface (need to remove the host charge)
Charging voltage: DC5V
Charging ways: USB charging
Standby time: up to 10 days
System requirements: Android 4.0 and above, iOS7.0 and above
Time formats: 24 h, 12 h system does not support
Function: Time display/week/month, day/pedometer/calories/movement distance/sleep monitor/heart rate monitor/alarm   clock/call remind/bluetooth music/bluetooth phone
Waterproof : dailylife waterproof only (not for swimming & bathing)

Features:

• Bluetooth version: Bluetooth 4.0
• High-end quality material, exquisite design, safe.
• Heart Rate Monitor
• Standby time: up to 10 days
• Support Android 4.0 and above, iOS7.0 and above
• Features: Time display/week/month, day/pedometer/calories/movement distance/sleep monitor/heart rate monitor/alarm clock/call remind/bluetooth music/bluetooth phone

Warranty : 1 month (manufacture defect only)

Whats's in the box:
1 x Bluetooth bracelet
1 x USB cable
1 x user manual