OK to Wake, glows a soft yellow in the evening and turns green in the morning at the time parent's specify. Kids take pride in waiting for the green light before they come visit mom and dad with the knowledge of a job well-done. This ingenious product is a life-saver for sleep-deprived parents for whom every extra moment of sleep is a luxury. Kid-friendly shape, parent-friendly design – kids love pressing the fun "toe" buttons which invoke funny facial animations on the LCD. Cleverly concealed parental control panel provides access to clock settings and instructions. Handy "Nap Timer" allows parents to put kids down for a nap without disrupting other settings. For older kids who want to get up "on their own", OK to Wake. is also an alarm clock with Snooze function – just like mom and dad's. Comes with both green bug and pink flower face plates. Operates on 4 AA batteries (not included), or use the included USB cord to plug it in using your own adapter. Easy to set up and use.