Multifunction Fitness Pedometer Tracker Watch with Calorie Counter and Sleep Monitoring Multi-functions: The smart wristwatch features activity fitness tracker, pedometer, sleep tracker, calories record, step counting, sleep quality monitoring etc. Material: Made of medical rubber, natural and non-toxic, very comfortable and easy to wear High sensitivity: Built-in 3D acceleration sensor pedometer, calculate each of your small action Easy to charge: Connect to your PC or power bank via USB cable, built-in rechargeable Li battery guarantee long lasting battery life Compatibility: Bluetooth 4.0. Can be connected with the mobile phone, tablet, PC , you can upload the activity data anytime anywhere.