It's never been easier to keep kids on track. Unique timer's light and sound cues help to keep your whole class on track. Features 180° viewing and a large, easy to read LCD display. Allows quick programming of 3 colored lights (red, yellow and green) that alert children to time remaining. Can be customized to suit your needs. Measures 8" x 4" . Requires AC adapter (LER6989) or 4 AA batteries, not included.