Feature :

• The updated tracker comes with an optical heart rate sensor built in, Xiaomi's new Band will track a user's heart rate, in real time, using photoelectric light perception and it also handles the regular fitness tracker functions such as step counting and sleep monitoring
  
• The battery is the same 45mAh one that provided a 30 day lifespan in the original. Expect a few days less thanks to the new heart rate features. The Mi Band 1S is IP67 certified dust and water resistant and also offers users a phone unlock feature and incoming call alerts by way of a vibration motor
  
• When you use the Miband, you must download the APP named Mi Band.
  
• Compatible With Mi Note Pro Mi4 Redmi Redmi2 Note Note2 4G iPhone 5S 6 6 Plus 6S 6S Plus with IOS 7.0 or above
  
• Smart Vibration alarm clock, simulate wake up naturally status: You can set the alarm on the APP, in front of the preset alarm within 30 minutes, with a slight vibration to wake you from a shallow sleep, when to wake up slowly shallow sleep, naturally wake up closer
  

Specification: 

Device Requirements: 

• Android 4.4 and above versions, and supports Bluetooth 4.0 for Android smartphones 
  
• Adapter For Apple iOS 7.0 or later and For iPhone 4s / 5 / 5c / 5s / 6/6 Plus / 6s / 6s Plus
  

Package Included: