[Screen protection design] This is a fitness tracker specially designed for children. The raised silicone can protect the fitness tracker screen and effectively protect the screen from damage in daily use. Weighing only 22 grams (0.6 ounces), it is comfortable,durable, and available in a variety of cute colors. The adjustable shoulder strap fits 3.9-6.5 inches (approximately 9.9-16.5 cm) wrists. The waterproof grade is IP68, which can meet daily waterproof requirements. [All-day activity tracking and 16 exercise modes] The pedometer can accurately record exercise minutes, steps, calories burned and walking distance. [Sleep monitoring & alarm clock] This fitness bracelet can automatically monitor your child's real-time heart rate every day to help you better understand your child's health. It can also track the time of deep sleep, light sleep, sleep and wakingup to help children develop good sleep habits. [Other practical functions] Children can also choose the theme interface they like. This fitness bracelet also has many practical tools, such as phone/text reminders, alarm clocks, drinking reminders and sedentary reminders to help children stay active.This child tracker adopts a waterproof design, allowing your children to enjoy water activities. [Long battery life & waterproof IP68] This fitness bracelet uses magnetic charging, which is more convenient. Your child can complete the charging operation independently. This fitness tracker can be fully charged in just 2 hours and provides 5-10days of battery life. Colour: Black