Mechanical Water Timer with Brass Inlet: Sturdy construction, no more thread wear, just turn the knob, no need to worry about forgetting to turn off the water. High Design: Less loss than ordinary mechanical , allowing your sprinkler head to work fully and water the entire area. High Design: Less loss than ordinary mechanical , allowing your sprinkler head to work fully and water the entire area. 2 Watering Modes: Timed watering for up to 120 minutes, plus unlimited manual watering, allowing you to water your lawn, garden, swimming pool easily. Easy-to-use Mechanical Watering Timer: The large with clear markings allows you to easily rotate to the exact time. No batteries or tools required, can be installed on faucets, sprinkler heads, etc.