Smart M4 band

The watch is compatible with IOS and Android system
    The working time of the watch battery lasts for 4 to 7 days continuously
    The battery is charged within an hour
    The watch screen is operated by touch
    Heart rate measurement
    Blood pressure measurement
    Calculating the steps of walking, running or cycling (step + kilometer)
    Calculate the calories burned per day
    Show notifications of mobile applications (WhatsApp, Facebook, Twitter, Snapchat, Instagram, Wechat)
    Show the number when calling
    Vibrate feature when there are notifications
    High quality HD Screen
    The battery is in standby mode for up to 30 days
    TBAND or Lefun Health are the programs that operate the watch
    https://www.youtube.com/watch?v=whnXetg_2fM