Neutop Replacement Parts Accessories for iRobot Roomba 500 Series 555, 560, 561, 562, 570, 581 and Other Models with Green or Red Cleaning Head. - Walmart.com
User manual iRobot Roomba 581 (English - 19 pages)
Roomba Comparison: 614 vs 675 vs 690 vs E5 vs 960 vs 980 vs I3 vs I4 vs I6 vs I7 vs S9 vs J7
Roomba Comparison: 614 vs 675 vs 690 vs E5 vs 960 vs 980 vs I3 vs I4 vs I6 vs I7 vs S9 vs J7