Specification: 
<br />Item Type: SmartBracelet
<br />Material: CNC Alloy + Tempered Glass
<br />Color: Black, Silvery, Pink
<br />Chipet: Nordic nRF51822
<br />G-Sensor: 3 Axis Acceleration Sensor
<br />Heart Rate Sensor: Independent R&D
<br />Control mode: lift wrist display, touch buttons
<br />Screen: 0.95 OLCD Screen
<br />Memory: 32K RAM+256K ROM
<br />Bluetooth Version: V4.0
<br />Waterproof Grade: IPX67
<br />Power Supply Mode: Built-In 100 Mah Lithium Battery 
<br />Stand by: 3~5 days
<br />Charging Time: 1~2 hours
<br />Charging Mode: Magnetism Adsorption
<br />Compatible System: Android4.4 or IOS8 and above
<br />Chip Size: 46*18.7*7.9mm
<br />Weight: 25g
<br />
<br />Package Included: 
<br />1 * Smart Bracelet
<br />1 * USB Charging Cable
<br />1 * English Manual