Track your activities with the LetsFit. With the LETSCOM Smart Bracelet, you can count your steps and learn about the calories you have burned during your exercise, monitor your sleep, and your heart rate ( for Smart HRM Bracelet only ). The Smart Bracelet can inform you about incoming calls, SMS or Whatsapp notifications. The Smart Bracelet also has an alarm clock and sedentary reminder, which you can set according to your wishes.Can also be synchronized data to apple health (healthKit)