Otto’s sleek profile, high-gloss finish, and chrome accents look great in any kitchen or bathroom. The innovative sensor pump technology automatically dispenses a fixed amount of liquid soap – not too much, not too little - helping reduce waste and saving you money on supply costs. Otto’s 8.5oz (250ml) capacity can be filled with dish soap, liquid hand soap, or hand sanitizer. The fluid level indicator window lets you see when it’s time to refill and the large, top-load refill opening makes topping it up quick and easy. Operating on four AAA batteries (not included), Otto measures 3.5 x 4.5 x 10 inches (8.9 x 11. 11.4 x 25.4 cm).