User manual iRobot Roomba 520 (English - 19 pages)
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Amazon.com: For iRobot Replacement Parts Roomba 960/890/895/800/600 Series Robots 614 615 640 652 665 670 671 675 677 680 685 690 695 801 805 850 860 877 890 891 895 4INR 19/65 series 1800LI 14.4V 26Wh 1800mAh : Home & Kitchen