First-of-its-kind, lightweight & portable Hydroshot power cleaner draws from any fresh water source. The WG644 delivers maximum efficiency at 450psi while minimizing water usage at only .90gpm. The 4­in­1 pressure nozzle lets you switch from varying degrees of water stream intensity. (0, 15, 25, 40). The hydroshot is perfect for around the home, campsite, marina, pool or lake — anywhere fresh water is available!