This is a very ingenious bit of kit. Screw in the gas cartridge and drop the pipe into your aqua roll/bucket/water container and switch on. You can vary the water temperature from cool to very hot. Comes with built in rechargeable battery. It also has a shower head and cover. It also comes with a very robust carry/storage bag. So if you fancy a hot shower or nice hot water to wash up in, then take a look. Any questions please feel free to ask. I am selling for £275 for the whole lot.