The STARTUL mechanical watering timer allows you to set watering times from 0 to 120 minutes. For a continuous water supply, set the timer to the "manual on" position. An external adapter allows you to connect the timer to a water pipe or faucet with a 3/4" (19 mm) or 1" (25 mm) external thread. A quick-release connector is used to connect the hose. A mesh filter prevents clogging. The quick-release thread size is 3/4". Operating pressure is 8 bar (1-8 bar).