Accuon Digital 4 Channel Timer and Clock Individual 4 channel count-up and countdown Timer/Clock with 12/24 hour setting. Timing capacity 23 hours 59 minutes 59 seconds. Each channel sounds distinctive alarm when time is up. Last countdown memory recall. 3 convenient ways to display timer; clip/stand/magnet. LCD size: 2 x .75 inches. Unit size: 2.75 x .75 x 2.375 inches. Operates on 2 LR44 Lithium Batteries (Batteries included).