Classroom timer/clock features unique light and sound cues to help keep your class on track. Colored lights and sound effects can be quickly programmed to alert children of the time remaining. 180-degree viewing and a large, easy-to-read LCD provide high visibility. Students can also utilize the digital clock to reinforce numbers and calculate elapsed time. Timer/clock requires either the Learning Resources AC adapter (sold separately) or four AA batteries (sold separately). Timer is designed for children ages 3 and up.