Fitness Tracker, Kinbom Heart Rate Monitor Smart Watch With Sleep Monitor, Step Counter, GPS, Message Notification, Bluetooth 4.0, IP67 Waterproof Activity Tracker for Android＆iOS Smart Phone (Black)

Smart Bracelet Features :

Multiple Sports Mode: Track Your Sports

Display Size : Bigger than common bracelet. High brightness, clearly vision under the sunlight

Display Time Mode : New feature, there are 4 different time modes available, casually switch it per your habit from "VeryFitPro" APP

Heart Rate Monitor : Get the power of continuous heart rate in the slimmer design whole day, during workouts and beyond

Attention : Only compatible with smartphone systems iOS 7.1 or above and Android 4.4 or above, Please put off the wristband when you want to charge it up, you will find the Built-in USB Charger.

Sleep Monitor Specification :

Bluetooth Version: Bluetooth 4.0 or later

Bluetooth Transmission Distance: 10 Meters (32.8 feet) 

CPU: Nordic nRF52832-QFAA

Sensor: KIONIX KX022-1020

HR Sensor: silicon labs Si1142

Screen size: 0.96 inch

Screen type: OLED

Material: upper casing: PC; strap: TPE

Dimension: suits for wrist size: 5.4 inch - 7.6 inch

Battery type: Li Battery

Battery capacity: 65mAh

Working time: 5-10 days

Charging method: USB charging

Charging time: 1-2 hours

Weight: 0.84 Oz (23.8g) 

Package details :

1* Fitness Tracker

1* User Manual

1* HD Clear film Screen Protector for Fitness Tracker