【Safety Design】Safe ABS material; the alarm clock features a child safety lock to prevent accidental damage to settings. This children's alarm clock must be connected to the included USB power cable to operate. 【Toddler Sleep Training】A cute-looking children's sleep trainer designed to help children distinguish between bedtime and wake-up time, fostering good sleep habits and helping parents get more rest. 【Nap Timer; Snooze Function for Extra Sleep】Nap timer setting available. The snooze function provides extra sleep time for complete rest before waking. 【Various Colors; Brightness】Can be used as a night light. This alarm clock's night light has 5 different colors to aid children's sleep. It also features a temperature display, and the backlight has four adjustable brightness levels. 【Sleep Sound Machine with LED Night Lights】3 types of sleep-inducing music, 5 alarm clock sounds, and 3 adjustable volume levels to meet various needs.