IRobot Roomba Combo Essential. Dust container type: Bagless, Product colour: Black, Shape: Round. Dust capacity (total): 0.4 l, Water tank capacity: 0.2 l. Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 2600 mAh, Running time: 120 min. Height: 80 mm, Width: 330 mm, Depth: 330 mm. Packaging width: 365 mm, packaging depth: 448 mm, packaging height: 131 mm.