The Xiaomi bracelet has function of record the sport date in every day, sleep quality monitoring, smart alarm clock wake up.

You can view real-time physical activity through mobile applications, monitoring the effect of walking and running, you can identify more sport through the clouds.

Xiaomi bracelet can automatically determine whether to sleep, deep sleep and light were recorded and summarized sleep time to help users monitor their sleep quality.

it can connect with your android 4.4 mobile phone(support connect the system with android 4.4 or more high)

Main Features : 

* Water resistant (IP67)
* 30-day standby power
* Sleep-cycle smart alarm
* Fitness monitor & sleep tracker
* Running MIUI Android 4.4 and above 

Specifications:

Manufacturer:    Xiaomi
Model:    Mi Band Pulse
Water-proof:    IP67
Power charging:    USB Cable
Bluetooth version:    4.0
Functions:    

• MIUI Unlock, Heart Rate Monitor
• Fitness Level Monitor
• Sleeping Quality Tracking
• Smart Alarm
• History Data
• Seek Mi Band
• LED Light Color setting
• Total Distance Display
• Average Daily Steps
• Share via Social Media
• Running IOS System

Battery capacity and life:    45mAh lithium polymer battery
Standby time: About 30 days
Compatibility:    Mi 4, Mi 3, Redmi Note 4G, or any device with Android 4.4 and above
iPhone models 4s and above that run on iOS 7.0 and above
Note: Mi Band's phone unlocking feature requires smartphones with MIUI or Android 5.0 and above
Material:    Surface: Aluminium
Shell: Makrolon
Wristband Button: Aluminium
Wristband: IPSiV
Size:    Sensor: 37 x 13.6 x 9.9 mm
Wristband length: adjustable between 157mm and 205mm
Weight:    5.5g