Electronic water timer. Features daily clock option of 12 or 24 hours. Skip cycles for 2nd or 3rd days. Manual or timedOn/Off settings. Run time from 1 to 360 minutes. Angled display for easier reading. Battery voltage meter monitors available power. Time countdown on screen during watering. Backlight in screen for better visibility. 1 On/Off watering cycle. Requires (4) AAA batteries, not included.