Our children's sleep trainer clock uses soft colors and facial expression to teach your child when it is time to sleep and when it is okay to , and help your child develop healthy sleeping habits, and it can also make the child sleep better and easily! The toddler alarm clock comes with a CR2032 coin battery that up your time settings when power outage, no need to reset anymore. Please NOTE: the time 't display and the alarm 't go off if use backup battery only! This cute toddler clock must be plugged in to work(does not come with an adapter). Our kids clock for girls & boys supports 12/24-hour format, standard alarm clock, nap timer, 8 kinds of ringtones to choose. You can also customize the alarm volume (0 -- 3) and the color & brightness of the alarm clock light according to your preferences. With snooze function: after pressing the "snooze" button, you can sleep for 10 more minutes. This kids alarm clock features 4 sleep modes so you can decide whether sound and/or light will kick in manually at night. Choose from 7 sleep sounds and 4 night light colors to create a soothing environment for sleep. Cute shape design, perfect perfect as birthday, holiday or christmas gift for boys and girls. color: blue Material: ABS Package Contents: 1 x Alarm clock 1 x USB cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.