Continuous heart rate monitor. It tracks your heart rate continuous at every moment every day and workouts. Heart rate recording will start automatically once you wear it on Multifunctional activity tracker. The HR3 activity tracker helps you record all your activities in the day,calculate the distance you walk and calories burned,take care of your health, monitor your sleep, remind you to have a rest and track your steps, mileage and calories for high quality sports IP67 Water resistant and 0.96 Inch TFT color screen. IP67 Professional protection level which means you could wear it even in the rain, hand washing,don't worry of it. Best suitable screen size with customizable clock faces, which gives you great experience Intelligent Reminder. With this smart wristband supports calls, text or SMS reminder, third-party messaging,calendar notification etc. Not only vibration but also screen display, make sure you don't miss any important calls or messages Long battery life and compatiable Features. Comes with 90mAh Li-ion battery packed on the fitess tracker, which enables the tracker keep working up to 7days. Syns with iOS and Android with App WearFit 2.0, iOS 8.0 and up, Android 4.4 and up systems