DIG RBC6000 Battery Powered Digital Controller for 3/4" and 1" Anti-siphon Valve Powered by two AA alkaline batteries with a safe period of 60 seconds to replace without losing the program Watering flexibility with a selection of watering frequencies and four start times Seven buttons with integrated high resolution screen Easy to read LCD display with AM/PM clock and icon-based programming for easy navigation Blinking notification on days the timer is active