Adjust yourself for a healthier lifestyle with our 1.54'' large touch screen fitness smart watch! It can automatically record your all-day activity tracker such as heart rate monitor, pedometer, and sleep monitor as well as provide drink reminder, sedentary reminder, alarm clock function, etc. And, with V4.0 wireless technology, after paring with smartphones with Android 5.0 and above or iOS 8.0 and above system, it can realize functions such as remote camera control, music control, calls-answering/rejecting control, phonebook and call history synchronization, messaging-notifying, smartphone anti-lost, etc. Additionally, it is IP68 waterproof to remove worries about hands washing, splashing, sweating, rainy, etc. And after about 2 hours full charge, it can work approx. 5 days and standby approx. 7 days.