The K 5 Premium Smart Control Flex high-pressure cleaner can be connected to the Kärcher Home & Garden app via integrated Bluetooth. This allows users to receive optimal support in various cleaning situations and for different cleaning objects through their smartphones, leading to more efficient cleaning results. The app offers many useful features, including an application advisor with helpful tips and tricks, an assembly guide, maintenance and care instructions, as well as the Kärcher service portal.

Additionally, the device features a Boost Mode for extra power, a G 180 Q Smart Control gun with an LCD display, and a 3-in-1 Multi Jet nozzle. The pressure settings can be adjusted directly on the gun or transferred from the app using the application advisor. The LCD display allows users to check which pressure level is set.

Other equipment details include the Plug 'n' Clean detergent system, the PremiumFlex high-pressure hose, the aluminum telescopic handle, the Quick Connect system for easily clicking the high-pressure hose into the device and the gun, as well as a parking position for conveniently accessible accessories.