Dual display permits you to simultaneously display a clock and timer, or two independent timers (up to 24 hours). Use one timer to count up, or use two to independently count down. Audible and visual alarm tells you "time is up". The large buttons and simple programming procedure make this instrument easy to use. Display tilts to allow freestanding use on your benchtop, or use the bracket (included) to mount on the wall next to your incubator. Includes one AAA battery.