The battery power makes this model an environmentally friendly choice. It's a slightly smaller pressure washer with a weight of no more than 1.3 kg.
From Amazon
Kärcher 18 V KHB 6 Battery Cordless Cleaning Gun Pressure: 24 Bar Flat and Rotating Jet Nozzle, A3/4 Inch Adapter, Weight: 1.3 kg, Compatible with 18 V Kärcher Battery Not Included
Conrad Electronic
Kaercher Home & Garden KHB 6 Battery Battery jet washer 24 bar Cold water, Hot water
OnBuy
Kärcher 18V Cordless Cleaning Gun KHB 6 Battery, Pressure: 24 Bar, Flat and Rotating Jet Nozzle, A3/4" Adapter, Weight: 1.3 kg, Compatible with K