Hand-free soap dispenser features a built-in precise infrared sensor with a quick 0.26s response time for dispensing liquid. Each pump releases 1mL, and for larger amounts, simply hold your hand underneath for an additional 2 seconds to receive more soap. This non-contact soap dispenser boasts an IP67 waterproof design, allowing the entire unit to be cleaned, which helps to prevent the battery compartment from water damage and corrosion. The bottom features a non-slip design for strong sealing. A clear window lets you easily check the remaining liquid and reminds you to refill soap in a timely manner. The automatic soap dispenser requires 4 AAA batteries (not included). When installing, please ensure the proper alignment of "+" and "-" symbols for correct installation. Rechargeable batteries can also be used with this product. Size: 113 x 70 x 235mm Material: ABS Colour: silver Package Contents: 1 x Soap Dispenser Only the above package content is included; other products are not part of this package. Note: Lighting and different displays may cause the item's color in the picture to vary slightly from the actual product. Measurement tolerance is +/- 1-3cm.