The Fitbit Ace 2 is an activity tracker designed for kids. It comes in a blue and yellow clasp with charging capabilities. It features multi-sport tracking, wireless connectivity, Bluetooth, average speed, alarm, stopwatch, pedometer, clock, data review, water resistance, average heart rate, and sleep tracking. It is compatible with Windows, iOS, and Android operating systems. The tracker is suitable for various sports and activities such as gym and training, walking, crossfit, swimming, yoga, pilates, running, and jogging.