The karcher k7 premium full control home pressure is the most powerful model in the range complete with the full control lance and trigger gun which guides users on the ideal pressure setting for the area being cleaned use the led display on the full control trigger gun to guide you achieving the best possible results also uses iconography showing where each of the 4 pre defined settings should be used with a hose reel on the back of the unit that makes winding and unwinding your high pressure h