Bought it and use once. Product link: https://www.youtube.com/watch?v=1nN23jXrW4s Product Details: - Sport fitness control tracker: With 0.96 OLED screen, it can display time and collect data of steps, mileage and calories consumption. All this data can be seen on APP or sync to your computer or mobiles - Data analysis, REMAX RBW-W2 will make a scientific sport plan - Sedentary reminder, Sleep monitoring, and Alarm & Clock. APP built-in 'Search the Phone' Mode, help you find your phone timely - Call/Message reminder, never miss the important information. By touching the screen, you can directly reject calls - Sharing to Facebook, Twitter and other social networking, get fit with your friends - Hands-free shooting, you can directly take selfie by twisting your wrist. -15-day standby time with battery( 100mAh), water/sweat resistant. TPE straps In comparison to REMAX RBW-W2 is an updated sport tracker bracelet with 0.96inch O-LED display screen. With features of heart rate monitor, pedometer, calories detection, sedentary reminder and so on, it manages your motion every moment and takes good care of you. Besides, it also add more practical functions like alarm clock, night mode and find your phone, smarter than ever.