Accuon Electronic Jumbo Digit Countdown/Up Timer Counts up and down from any time up to 99 minutes and 59 seconds Easy-to-read 1.5 inch bold digital display shows minutes and seconds. Unit dimensions: 3.15 x 2.75 Alarm sounds when countdown ends. Last countdown memory 4 convenient ways to display timer: Hangs/ clips/stands/magnet Operates on one AAA battery; Battery included