Description About Product 1.54 inche TFT square screen CPU: MTK2502D, compatible with IOS and Android OS Practical Tools:remote camera,remote music,anti-lost,alarm clock,stopwatch,calculator and calendar;360mah large lithium polymer battery support up to 7 days use. Fitness Watch:support heart rate monitor,pedometer,sleep monitor,sedentary and drink functions; Bluetooth Smart Watch:Make calls and check sms and app(such as whatsapp,facebook,twitter)messages.More setting available; GV68 Waterproof & High Quality Craftsmen:You can wear it when washing hands,taking bath,swimming and diving under water;Enhanced,durable design with scratch-resistant HD screen,ergonomic profile,aircraft grade aluminum bezel with metal coating and interchangeable wristbands. Some Features 1.54 inche TFT square screen CPU: MTK2502D, compatible with IOS and Android OS No SIM card and camera Bluetooth Ver 4.0, support information sychronization 32MB ROM + 32MB RAM IP68 waterproof Heart rate sensor, G-sensor Built-in 350mAh high voltage polymer battery Finish processing: Aliminun alloy with metal plating case, powder metallurgy stainless steel lug Detachable straps Available colors: Red, Green, Pink" Cautions The information in this document is subject to change without notice, every effort has been made in the preparation of this document to ensure accuracy of the contents, but all statements, information, and recommendation in this document do not constitute a warranty of any kind, express or implied. It is normal that some functions may vary in certain version of software. Please charge the watch for no less than 2 hours before using it. When under water, please do not press the power button, and the capacitance value of the touch screen will change, so it is normal that the touch screen does not respond to your touch-based gesture. With IP68 water & dust protection, your watch may be used for shallow-water activities like swimming in a pool. However, it should not be used for diving, water skiing or other activities involving high-velocity water or hot bath, submersion in tea or any other corrosive liquid. Diving under more than 3 meters water or pressing the button when under water may cause water coming into your watch, these are destructive use and you will not be able to enjoy the warranty and free maintenance. After a successful pairing with android mobile phone bluetooth, you can sync your phone's text message (the iphone temporarily does not support synchronous SMS).