Heart Rate Sports Smart Band, X2

Model Number: X4-1-#6953 Brand Name: X4 smart watch Key Specifications/Special Features: Highlight:1. 100% brand new2. Remind you of coming calls and text messages3. Have functions of exercise tracking, sleep monitoring and calorie consumption calculating4. 0.69-inch OLED screen for information watching5. With touch control, easy to operate6. Connect with cell phone to set smart keys for photo taking and video shooting7. Ultra-slim and close to your skin8. Clear display of date and time9. With light weight, comfortable to wear
10. Supports information synchronization through cell phone app
11. Seamless and waterproof design
12. With anti-lost alert function
13. Super long service time up to 7 days
14. Suitable for various occasions including outdoor activity and business conference

Specification:
Display:0.69-inch OLED
Resolution:96 x 16
Acceleration:3-axis gravity sensor
Battery:40mA chargeable Lithium-polymer battery
Engine: vibration alarm
Charging mode:5V USB port
Waterproof grade:IP57
Service time:7 days
Compatibility:iPhone, Android
System requirement:Android 4.3 or above, iOS 7.0 above, Bluetooth 4.0
Data synchronization:Bluetooth data to cell phone app
Data storage:7 days
App languages: simplified Chinese, English
Dimensions:41 x 17 x 10.5mm
Watchband length:140-195mm
Watchband material:TPU
Colors: black, blue, orange, purple, green