【Sleep Monitor & Heart Rate Monitor Watch】The 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. 【All-day Activity Tracker】Automatically track steps, distance, calories burned and active minutes. Set daily exercise goals and your fitness tracker will vibrate in celebration when you reach them. Analyse your stats in greater detail using the free “Yoho Sports ”App. 【See Calls & Messages on Your Wristwatch】Receive call, calendar, SMS and SNS (Facebook, WhatsApp, LinkedIn, Instagram, and Twitter) notifications on display; never miss the messages that matter. 【Wide Compatibility】Supports with Bluetooth 4.0, IOS 7.1 or above (iPhone 4S, iPhone 5/5S/5C, iPhone 6/6S plus etc.). Android 4.4 or above (Download APP “Yoho Sports” from Apple Store or Google Play. (Smart phone only, not for PC and WINDOW PHONE) 【IP68 Waterproof Fitness Watch】You can wear it when washing hands, taking bath and swimming, which totally meet your daily need.