3 years & up. It's never been easier or more fun to keep kids on track with this unique lighted electronic timer and clockl Easily program green, yellow and red sections to indicate that time is running out. With 180 degree viewing, it teaches time management. Perfect for: study sessions, projects, tests, experiments, practice sessions, classroom assignments, cooking, hearing impaired, and more. Measures 8" x 4". Requires AC adapter or 4 AA batteries, not included.