Specification:

• Bluetooth Version: V4.0 ·
• Waterproof Rating: IP67 ·
• Android 4.4 + / IOS 7.0 ·
• 0.42 Inch OLED Display Dialog

Key Features :·

• Measurement Of Heart Rate
• Sleep Management
• Pedometer
• Calories Burned Measuring
• Steps Counting
• Distance Recording
• Sedentary Reminder · Unlock Phone Without Password
• Call/APP Message Reminder
• Time
• Alarm Clock ·
• ADI Ultra Low-Power Acceleration Sensor + Optical Heart Rate Sensor · Working Temperature: -20°C ~ 70°C
• Package Includes 1 X
• Mi Band 2 1 X
• Charger 1 X
• Weight: 0.50 KG

Main Features:
- Bluetooth Synchronization
With Bluetooth 4.0, this smart bracelet is available for smartphones with Bluetooth functions.
- OLED Touch Screen
Just touch the circular button gently, the OLED screen will display the current time, steps, heart rate, distances, calories, etc. 
- Heart Rate Monitor
It can dynamic-static monitor your heart rate, provide data for you at any time.
- Incoming Calls / APP Message Alert
When someone calls or sends any messages to your phone, the watch will remind you via vibrating, so you will never miss them!
- Sleeping Monitoring
Accurately monitor total effective sleeping time and motions time every night, also APP will give you periodical evaluation, help you develop good living habits.
- Sport Monitoring
This smart bracelet can record steps, calories, and distance. Let you know your sports data, adjust your exercise program and get a healthier life!
- Intelligent Alarm Function
Wake you up every morning, will not be late for work; idle alert to remind you with vibration, stretch your legs after working for a long  time.
- No Passcodes Required
Every Mi Band 2 have an exclusive ID, when your smartphone closes with the band, your phone will be unlocked, just identify yours with Mi Band 2. 
- IP67 Waterproof
The IP67 waterproof allows the bracelet to be held in the water for a maximum of 30 minutes at a depth of 1 meter. ( Don't wear the bracelet when diving )
- Full Compatibility
Support Android 4.4 or above and iOS 8.0 or above with Bluetooth 4.0.
- Download APP
You can search the name "MI FIT" in the "App Store" or "Google Play" to download the APP combined with Mi Band 2 to enjoy happy sports time.
The watch time is synchronized with the phone time, and the time system is also the same.