?Fitness Tracker Watch and Band Size? Heart Rate/Blood pressure monitor, Blood Oxygen Monitor(Accuracy±1),Slide to Unlock Screen,Distance Calculation,Sleep Management, Calories Burned,Call Reminders, Message Alerts (Like Facebook, Twitter,WeChat etc)Sedentary Reminder,Find mobile phone,Alarm Reminder. This band size fits for wrist from 5.6'' to 7.8''.
?Heart Rate & Sleep Monitor?The fitness activity bracelet can monitor your heart rate to help you do exercise scientifically and accurately monitor total effective sleeping time and motions every night, you can better understand your sleeping quality. (NOTE:All of detect data can not guarrantee 100% accurate, which is only for reference, can not be medical use!!!)
?Deep Waterproof and Dustproof? Life waterproof and allows your washing hands, getting caught in the rain, or wear it swimming in the ocean,shower, pool and daily life, will not damage your smart bracelet watch.(Water depth less than 33 feet,duration half an hour.Only be use in cold water.)
?Fast Charge and Ultra-long Standby Time??.Find the charging touch spots at the back of the bracelet;?.Make the pins of clip charger aim at the touch spots and clamp the bracelet tightly,USB and plug into computer USB port to charge.Full charge needed 1-2 hours and the standby time can be up to 5-7 days with full power, standby time for 30 days. (NOTE:The charger must clampe the bracelet tightly,otherwise you may fail to charge.)
?Widely Compatible and Service?Smart wristband tracker connect with smart phone by Bluetooth, Support bluetooth 4.0 Version, compatible with Android 4.4 or above, iOS 8.0 or above. Download the "Hero Band" App.If for any reason you are not satisfied, please feel free to contact us via" Help Desk" on Amazon Messaging Services for all your issues,We will help you solve the problem quickly. (It be a best choice for Valentine's Day Gift for boyfriend/husband.??