F4 smartband is a device that makes you live in healthier and more intelligent lifestyle. It helps to monitor basic physical indicators like sleep quality that you can know your body condition better. It tracks steps and shows you how you're stacking up against your daily goals. Besides, you can share your data on Facebook and Twitter, which may encourage you and your friends to do exercise and raise interest in sports.

Main Features:

• Perfect Personal Health Tracker: heart rate monitor, pedometer and sleeping monitors. 
• Ultra-long Battery Life: it consumes less power and can generally standby for 7 - 10 days. 
• Waterproof Design: IP68 waterproof standard, suitable to use at home, office and during outdoor activities.
• Functions: Pedometer, Sedentary reminder, Heart rate monitor, Sleeping monitor, Alarm setting

Specification
Model : F4
Built-in chip type: NRF51822 
Bluetooth Version: Bluetooth 4.0 
Waterproof: dailylife waterproof (not suitable to wear for swimming and bathing)
Bluetooth calling: Caller's name display,Phone call reminder 
Health tracker: Heart rate monitor,Pedometer,Sedentary reminder,Sleep monitor 
Remote control function: Remote Camera 
Notification type: Facebook,Skype,Twitter,Wechat,WhatsApp 
Alert type: Vibration
Screen: OLED 
Operating mode: Touch Key
Battery Capacity: 130mAh Lithium-ion polymer battery 
Charging Time: About 2hours 
Standby time: 7 - 10 days
Shape of the dial: Rectangle 
Case material: ABS,PC 
Band material: TPU
Compatability: Android 4.4 or above and iOS 9.0 or above 
Language: English,Simplified Chinese
Dial size: 5.0 x 2.0 x 1.0 cm 
Band size: 23.5 x 1.8 cm 
Product size (L x W x H): 23.50 x 2.00 x 1.00 cm / 9.25 x 0.79 x 0.39 inches 
Package size (L x W x H): 11.00 x 9.00 x 3.00 cm / 4.33 x 3.54 x 1.18 inches 
Product weight: 0.0240 kg 
Package weight: 0.0830 kg

Warranty : 1 month

Package Contents
Package Contents: 1 x Smartband, 1 x USB Cable, 1 x  Manual