Sell ∋☇K1 Heart Rate Fitness Tracker Smart Bracelet Wristband Watch Sleep Monitor (BUY 1 TAKE 1) 0ZJC best price

MAIN FUNCTION-Pedometer, Calories, Distance, Heart Rate Monitor, Sleep quality measurement, Call reminder, Alarm clock, Search bracelet and so on,Lightweight 20g quite convenient even wear it sleeping.Responsive OLED Touch Screen - by short touch/long touch 5 seconds of the only key,you can easily read the steps counting, heart rate, calories, time, date, messages, etc.Key Specifications - Bluetooth 4.0. Supports IOS 8or above (iOS 4S, 5/5S/5C, 6/6S plus, 7/7S plus,etc.); Android 4.4 or above (Download APP from Apple Store or Google Play. Smart phone only, not for PC or Tablet).High quality polymer rechargeable battery guarantees long battery life: about 7-10 days standby time/4 days operating time.