Product details URL: https://1drv.ms/b/s!Ago7smi35dIngRRi-KketBzAqK8l https://1drv.ms/w/s!Ago7smi35dIngRJVLCjumORErBQO Note: The product doesn't track the heart rate function. How to Charge:(1)pull out the main body from the band (2) insert the charger into USB port Features: Real Time Clock, Pedometer, Calories Counter, Distance Counter, Sleep Monitor, Alarm Alert, Call Reminder. Record daily activities, you could check daily activities including steps, distance and calorie consumption in the app. Anti-Lost, Phone Finder, Device key could control remote photograph shooting. When the Bluetooth is disconnected or the phone is out of the Bluetooth distance range, the watch will alert. When there is SMS, incoming call or message on the connected phone, the device vibrates to remind you. Sleep Monitoring: Device could automatically recognize your status and monitor the whole sleep progress with analyzing the deep sleep and light sleep hours. Please download the free APP Veryfit 2.0 from App Store or Google Play. Specifications: Strap Material: TPE Screen: OLED64*32 Color: Black / Blue / Purple / Pink/Green APP OS: IOS7.1 & above, Android4.4 & above Sensor: G-Sensor Chip: Nordic Vibration: Real time vibrate to remind Waterproof: life waterproof (Sweat proof, rain proof, water drop proof) Waterproof Level: IP67 Bluetooth Version: Bluetooth 4.0 Battery: 50mAh Li-polymer battery (included) Standby time: 7-10 days Charging: USB contact Charging time: About 1 hour Weight: 18g Functions: RTC (Real-Time Clock) Pedometer Calorie Counter Distance Counter Sleep Monitor Call Reminder Alarm Alert Anti-Lost Cell Phone Camera Remote Control Compatible with: Most mobile phones. Iphone4S/5/5C/5S/6/6P/6S/6SP, IOS6.1 and above Package Includes: 1 x Smart Bracelet With Box 1 x User Manual