Gears. Decorative vinyl for Roomba- 500 and 600 series
iRobot - Owner Manual Roomba 600 Series
iRobot Roomba 600 Series Repair - iFixit
Introducing the Roomba 600 Series
Why We Love the Roomba 600 Series | Reviews by Wirecutter
Amazon.com - iRobot Roomba 692 Robot Vacuum-Wi-Fi Connectivity, Works with Alexa, Good for Pet Hair, Carpets, Hard Floors with Authentic Replacement Parts - Roomba 600 Series Replenishment Kit, White