Tracks steps and activity levels to help encourage physical activity and a healthy lifestyle Monitors sleep and features bedtime reminders and silent alarms to help kids get a good night's rest 91mAh polymer lithium-ion battery provides up to 8 days of usage on a full charge and recharges via USB in just 2 hours Monochrome touchscreen display with a 72 x 128 resolution features animated clock faces that grow and develop as kids move and play Virtual badges and on-screen celebrations help motivate kids to reach their goals Water-resistance to 50m lets kids wear the tracker in the shower or at the pool Family account function allows parents to manage their own tracker along with their child's from one convenient place Fitbit app enables features like step competitions, messaging, and cheers