Appenabled sleep trainer The Tommee Tippee Timekeeper Sleep Trainer Clock teaches your child when its time to sleep and when its time to get out of bed Customizable from your phone Download the free App to control the display music colors brightness and alarm settings from your phone 10 soothing sounds Choose from 5 beautiful lullabies and 5 natural sounds to help settle your child to sleep Child lock and power cut recovery mode The child lock stops little fingers from changing the settings and the clock wont lose its settings if there is a power cut Batteries not required The Sleep Trainer Clock uses a microUSB charger so theres no need for batteries excludes adaptor plug but compatible with most USB plugs used as phone chargers