Specification: Dial:4.5*4.1cm Strap width:2.1cm Circumference of the watch:13-19.5cm Display Type:Digital Band Material:Silicone Water Resistance Level:Waterproof Design Details 1. Silent Vibration Alarm -Remind children to study and rest gently. Whether in the classroom or in the dormitory, the vibration design will not disturb others, which is very suitable for students. 2. Convenient Charging - The dial comes with a USB interface, you can use any USB adapter (such as smart phone adapter, computer) to charge the watch, and the battery life is 15 days+. 3. Non-Bluetooth Fitness Kids Watch - You dont need a mobile phone or download an APP, just bring a watch to track, 24 hours of exercise Pedometer, Mileage, and accurate recording of every days data. Package include: 1 * Kids Watch 1 * Charging Cable 1 * Instructions 1 * Box NOTE 1. Since the watch is not a professional measuring tool, the data is for reference only and has certain errors. 2. The watch can withstand a slight splash of water, but should try to avoid immersion in water.Do not press the button under water, frequent contact with water will reduce the service life of the watch.