????【Heart Rate & Sleep Tracker & IP68 Waterproof】The fitness tracker can automatically monitor your kids daily real-time heart rate and track how well your kids sleep at night, you can easily get the data about your kids’ sleep trends through the “FitCloudPro”APP. The waterproof grade of this activity tracker is IP68, which allows your kids to enjoy more water activities, kids can also wear this fitness tracker watch while enjoying pool time.