This item lets you monitor your water usage when using your hosepipe. It attaches to a threaded garden tap with either a 3/4" BSP thread or a 1" BSP thread. The adapter can remain on the tap, as it features a universal male click hose connector compatible with other quality hose connector brands. The water meter can be easily clicked onto the adapter, measuring and displaying the water volume on its digital front screen as it flows through. The meter can measure up to 1000 liters before needing a reset. It includes a universal male hose connector at the bottom for hose attachment. The meter is battery-operated (battery supplied) and uses very little power, lasting at least a year or more. It can be set to measure in gallons per minute or liters per minute.