The simplicity of the Video 2 Water Timer's three programming buttons doesn't limit its capacity for customization! Gardeners can program two separate daily watering cycles for up to seven days, with each individual cycle lasting from one minute up to 23 hours. It's built to last, too, with a washable sponge filter that traps valve-damaging sludge, and circuitry that's protected by a watertight seal. Operates on 9V battery (not included).