This SmartTime™ Digital Timer is great for testing, games, TV/video game time, cooking, general classroom time management, and more. It features 4 quick pre-sets for repetitive timing and an alarm when time is up. Set your own desired time by repeatedly pressing the buttons.Details:Yellow4" x 3" (10.16cm x 7.62cm)4 quick pre-setsIncludes magnets, hook and built in stand on backCR2032 battery included