This timer allows you to set it and it will do the watering for you. Please close the top lid tightly to ensure water does not enter. Features: - Uses LR03 2xAAA 1.5V Alkaline battery (not included) - Durable high-impact construction - Clock time display - 8 different programs ready to be set - Simple, reliable, and waterproof - Working pressure: 0 to 8 bar (0–116 PSI) - Working temperature: 5–60°C (40–140°F) - Can be attached to 3/4 inch (19mm) tap or faucet - Manual watering: can be set for one-time instant manual watering - Manual ON, Manual OFF, Auto mode - Frequency can be set per day or each day of the week, with 15 different day choices Color: As shown Material: ABS Package Contents: 1 x Garden Irrigation Controller Note: The package includes only the items listed above; other products are not included. Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1–3 cm.