Anti-sweat design:Use Two-color molding strap. Structure of perspiration groove on the back strap.Not afraid of sweat.Exquisite Design:Multi-function dial??Reinforced mineral glass??316L stainless stee??1.2 inch HD round screen.</br>MTK2502/Large-capacity 380mAH polymer lithium battery/Semiconductor high sensitivity</br>Four Health Features:ALL day record your drip sport.Heartrate sensor of the second generation??Sedentary Reminder??Built-in pedometer accuracy of industry has high standards ??PSG</br>Bluetooth 4.0 compatiable with ios and android phones:iphone 7/6s/6 plus/5/5s and samsung s7/lg/huawei.Convenient notification--Unprecedented tacit agreement.it includeds Text Messaging??Skype??QQ??Calls??News??Reminder of updata and so on.</br>Automatci Light UP:Intelligent power-saving.Gravity sensing system automatic??indentification and light up the screen.</br></br>Product Description</br></br><b>Warm tips: <br>If you have any problems or questions about the item and service?? please feel free to e-mail us?? we will