P3 International Q1156 Save a Drop Water Timer Hassle free lawn and garden watering water your garden with the kind of control that makes sure you never waste a drop Gives you the capability to determine when you water your garden Install 2 AA batteries (not included), attach it between your faucet and hose, and your ready to go Set the frequency knob to how often you want to water and then adjust the run time knob to determine how long each session lasts Select between 1 hour to 1 Week intervals that can last from 1 to 120 minutes