Make your mornings a little easier. Whether you feel like sleeping in or need to head out early for work, the SunRise Once-a-Day timer takes care of watering the plants for you. Absolutely no programming means never forgetting to water, the sun starts the watering process and automatically turns off when it's done. Simply set the amount of time you want to water and SunRise does the rest. If only everything could make your morning this easy! Automatically waters every morning with no programming. Built in UV sensor detects sunlight and turns the water on for the preset amount of time. Simply turn the knob to set the amount of time to water for 5 minutes up to 2 hours. Use the manual feature for quick jobs and extra irrigation when needed. Requires 2 AA Batteries (not included). Backed by a Melnor 7 Year Limited Warranty. Melnor stands behind its products.