SmartTime To Go timer is great for testing, games, and general classroom time management. The 60 minute visual timer measures 3″ x 3″ overall, with a 2.5″ x 2.5″ screen size. Alarm sounds when time is up. Requires 2 AAA batteries, included. Portable and easy to use anywhere. Great for therapy. Brand: Ashley Productions Manufacturer Part Number: ASH49000 Manufacturer: Ashley Productions® Assembled Product Weight: 2.5 lb Assembled Product Dimensions (L x W x H): 7.99 x 3.00 x 3.00 Inches