Kids Sport Watch: Our kids fitness tracker watch does not require connection to a phone or app and is easy to set up. It features step counting, stopwatch, calorie tracking, and mileage tracking to record children's activity data. Powerful Battery Life: This kids digital watch has a USB charging interface. It can be charged using any standard USB adapter, such as a smartphone charger, computer, or portable power bank. Battery life lasts approximately 15 days on a full charge. Silent Vibrating Alarm: Parents can set two vibration alarms to remind children about study and rest times. The silent vibration alert is discreet and ideal for use in classrooms or dormitories without disturbing others. A great option for students! Reliable Quality: This lightweight kids watch is soft and comfortable on the skin. The design is fun and appealing for children. The strap has multiple adjustable holes and is flexible enough to fit small wrists securely. Waterproof Resistant: This boys' digital watch is 5 ATM water resistant, suitable for hand washing, face washing, and rainy conditions. It is not intended for swimming, hot baths, or saunas.