Functions:                                                                       

Time/Date display
Heartrate monitoring 
Calorie consumption
SOS for help
Call notification/SMS alert
Camera&Music control
Track back function
Sleep monitoring
Steps recording
Charging protection
Touch panel
Anti-lost
Bluetooth
Firmware upgrade
Alarm
Looking for phone
QQ,wechat note IOS support,  Android no support  
Accept&handup the phone IOS support,  part of  Android no support  

Specifications:                                                                    

Bluetooth Chip：nRF51822   
Pedometer Sensor：KX022   
APP Language：Chinese，English，France，German，Spanish，Danish，Russian，Swedish，Japanese       
Screen Display：0.96 inch OLED   
Bluetooth version：BT4.0   
BT wireless Distance：8-12meters   
Battery capacity：80 mAh   
Standby time：4-7days   
Charging currents：60mA   
Charging mode：contact charging   
Average working currents：small typeface 6mA,large typeface 10mA   
Average standby currents：30uA   
Working voltage：3.7V   
Operating temperature：0~40℃   
Operating humidity：5%~95% nonsolidifying   
Product dimension：22*9.9*134~205mm    
Material：Body：PC.Strap：TPU  
Net weight：25.9g   
Water proof：IP X7   
Certificate：CE，FCC