3 years and up. Keep time in a captivating way with this Rainbow Visual Timer. Perfect for playtime or center time, this timer uses the colors of the rainbow to make children aware of how long they have left to do something or be somewhere. This recognition of time will help children emotionally prepare for transitions, and the vivid colors will have a calming, cheering effect. The rainbow can light up or go dim, and the timer can go up or down.