The Stoplight Sleep Enhancing Alarm Clock from It's About Time is a fun and simple way for toddlers to answer their own question, "is it time to get up" At a young age, toddlers know their colors and understand that red means stop and green means go. Toddlers know if it's time to get up or stay in bed by looking at the stoplight. When the red light is on, kids will understand that it is still time to sleep. When the green light turns on, kids will know that it is time to get out of bed. Recommended by pediatricians.