The Dial Faucet Mechanical Timer provides timed watering for up to 120 minutes. Simply twist the dial to the desired watering period, and the timer will stop the flow of water upon completion. The mechanical operation requires no batteries and makes an easy and quick solution for your watering needs. This mechanical watering controller features a comfort grip. It features a large dial for ease of use. And is constructed of durable high-impact plastic. Attaches to any standard household spigot and garden hose and helps to prevent over-watering.