CleanMate QQ2-L is your personal robot cleaner that sweep and vacuum for you. It can easily handle various surfaces including carpet, hardwood tile and linoleum. It can also go underneath the beds and other hard-to-reach places to clean dirt, dust and pet hair while simultaneously killing bacteria and deodorizing with its ultraviolet light. With Cliff Sensing technology built-in, CleanMate intelligently avoid stairs and ledges. CleanMate can work ceaselessly up to 70 minutes on a single charge. The main difference between QQ2 and QQ2L models is panel display.