?Three Cleaning Paths: First up and then down, first left and then down, first right and then down, and return to the starting position. ?4M Extension Cord&Fast Cleaning Speed: Included a 1M AC power line and a 4M extension DC power cord, perfect for extra-large windows cleaning. 4mins/square meter cleaning speed (clean twice everywhere), do the cleaning job with high speed and high efficiency. ?Cleaning Area&Max. 30 Minutes Standby Battery: The window cleaner can easily clean the framed glass window with a size small than 6*5 meters. There is a battery backup to prevent an unexpected power outage. Please confirm the battery is full (green LED). ?Anti-falling Control: Comes with a 4.5m safety rope and strong vacuum absorption to anti-fall. ?Remote Control Function: The included remote controller can control cleaning mode switching, start/stop.