? 24/7 AUTOMATIC HEART RATE MONITORING SYSTEM: In the newest generation ATB Fitness K1 Fitness Bracelet the fundamental scientific heart rate monitoring system can track your heart beats in real-time automatically for each second and continuously for 24 hours 7 days a week. You do not even have to touch your tracker and you can check your results all-day heart rate and view heart rate curve to help you understand your health and fitness better. ? SLEEP MONITOR AND ACTIVITY TRACKER: Automatically track steps, distance, calories burned, hourly activity. You check easily and analyse your sports data history to develope yourself in a more specific direction using the free WearFit2.0 which has been created to support you. The braclet can track your sleep quality and shows you the deep and light sleep hours, awake hours. You can set a silent alarm in the app so the braclet will vibrate to wake you up. ? CALL & MESSAGES NOTIFICATION AND CAMERA REMOTE CONTROL: This is also a fundamental function so you will have immediate alert when anything happens in your social media world so you won't miss the most important happanings. When your phone receives a phone call or a message, it will vibrate on your wrist. If you don't have you selfi-stick with you not a problem just open the camera function in the app and you can still shoot the best photos. ? IP68 WATERPROOF: IP68 is the highest level of connector waterproof rating standards. You can wear it freely while exercising, swimming in the pool, washing your hands, shower and etc, which totally meet your daily needs.