I have a very lightly used Karcher model KM 75/40 W BP. These are over $10000 new. Operates at 2.6 mph. Has a 10.5 gallon hopper. The handles fold down for storage or transport. Has two 12V AGM batteries. Comes with charger. The system is 99.5 % efficient to prevent fine dust particles from reentering the environment. Comes with mechanical filter cleaning system. Easy to operate. It also has a litter gate that allows it to collect large debris such as water bottles and cans. Mine is like new, just dusty from sitting in the shop. All the brushes are very easily replaceable. Sweeps about 30 inches. There is about 2.5 hours of run time. You can sweep approximately 72000 sqft at 2 hours of runtime. That's a lot it sweeping. You can also sweep carpets with this. This is a very nice machine with very little use. It's half the money of a new one. Possible delivery. Asking $5500 obo. Thanks 2zero8-nine46-8nine56