Specifications 
Main Size: 45mm *23mm*11mm 
Wristband Size: 225MM 
Main Material: Acrylic 
Wristband Material:TPE 
Clasp:Stainless steel 
Weight: 28G 
Waterproof Level: IP66
Language: English,Chinese,Japanese,Korean,Portuguese,Spanish,French,German, Arabic, Russian, Italian 

Main Parameters :
MCU: ARM-Cortex M4 
Bluetooth: BLE4.0 
Flash:16M 
Acceleration Sensor:Triaxial Acceleration Sensor 
Heart Rate sensor: PPG 
Screen: 0LED 64*48; 0.66inch 
Key way: Slide Touch 

Electronic Parameters 
Battery: Polymer 
Battery volume: 120mAh 
Charging Way: Micro-USB 
Battery requirement: 5V 1000mAh 
Charging duration: 1-2 hours 
Standby duration: 15 days 
Continuous Heart Rate Monitoring: 48 hours (difference with different skin ) 
Compatibility:Android 4.3 / ios 7.0 or higher version
App: "mistep"

Functions: 
1.This Smart Bracelet can monitor your Heart Rate all day.
2.Display the time, steps, distance and calorie clearly. 
3.Record and analyse the sleep data to know your sleep quality. 
4.Find the watch by app when you lost it somewhere around you.
5.When you have calls or SMS, the smart bracelet will vibrate to remind you. 
6.Remote taking photo function,You can control your cellphone to take photo from your wrist.
7.When Bluetooth paired, you can sync your data to it.