Count Up - Count Down Alarm Timer (Sper Scientific 810026R)

Counts up or down for 100 hours in intervals of 1 second. In count down mode unique feature tells you how much time has elapsed after the alarm sounds. Memory allows repeat of just completed cycle. Alarm clock mode. Has a built in stand, pocket clip and magnet. Includes one LR44 button cell battery; replacement #3029-60. Dimensions: 2 3/4” X 2 3/4” X 1/2”. Five year warranty.