It's never been easier to keep kids on track! The Time Tracker allows quick programming of 3 colored lights and 6 sound effects that alert children to time remaining; customize them to suit your needs. It helps children learn to manage play time, homework, music practice sessions, independent reading - even time outs. It is particularly effective for individuals with Autism as it helps increase awareness of time. The Time Tracker features a large, easy-to-read LCD display, offers volume control and pause feature, and measures 9" in height. It requires 4 AA batteries - not included.