iRobot Power Supply for Roomba 500/600/700 Series - BLK 100-240V ~ 50/60Hz ~ 33w Compatible with Roomba 500/600/700 Series Vacuum Cleaning Robots that are equipped for use with a 100-240V ~ 50/60Hz ~33w power supply Charges robot in three hours Connects directly to the robot or use with the iRobot Roomba Home Base