complicated installation and operation. Just turn the knob and press the button, that's it! Note: * Batteries are not included. * When the battery is connected for the first time times, it takes up to 1 minute for the battery indicator to judge the battery strength. Features: Color green Material: ABS Faucet connection: US / EU (optional) * EU same with UK Maximum operating pressure: 80 psi for irrigation only Timer input: 3/ female thread 4" Timer outlet: 3/4" male thread Faucet diameter: 27 mm (US); 20 mm (EU / UK) Hose connection: 14 mm - Suitable for all known plug-in systems Working pressure: 0 ~ 0.8 MPa Water temperature : 0~40 Watering duration: adjustable from 1 to 300 minutes Frequency: adjustable 6 hours, 12 hours, 1 day ~ 7 days Power supply: 2 * AA alkaline batteries (not included) Item size: 14.5 * 13.2 * 5.5 cm / 5.7 * 5.19 * 2.16 inch Package size: 14 .6 * 9.4 * 4.2cm / 5.74 * 3.7 * 1.65in Item Weight: 424g / 14.95oz Package Weight: 447g / 15.76 oz (US); 452 g / 15.94 oz (EU / UK) Button setting instructions: AUTO: Timer according to your personalized schedule SET CLOCK: set the time of day START TIME: select the time you want to water HOW LONG: Determine the duration of watering How often: choose how often you water OFF: Stop all watering Packing list: 1 * water timer (batteries not included) 1 * filter 2 * pipe connector 1 * User Manual (English) < br/>< br/>