Ottos 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 soapnot too much, not too little - helping reduce waste and saving you money on supply costs. Ottos new 8.5oz (255ml) capacity can be filled with dish soap, liquid hand soap, or hand sanitizer. The fluid level indicator window lets you see when its 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 (8.89 x 10.16 x 25.4 cm). IMPORTANT INFORMATION: After inserting the batteries, if the blue light comes on and you hear the motor but the soap doesnt dispense, try pouring the soap into a separate container, then fill the pump with hot water (not boiling) and let sit for 5-10 minutes until cool. Put your hand in front of the motion sensor and repeat until the water starts to flow