Simply place hand under the dolphin and it automatically dispenses a predetermined amount of liquid soap via a photocell. Red eyes light as soap dispenses. Its appealing design fits any bathroom decoration-Ideal at home, in the office, in a clinic or in a restaurant Secure, comfortable and reliable Intended to be used with customary liquid soap. Skid-free base Holds up to 8oz liquid soap Wall mountable Takes 4 AA Batteries (1.5 V) NOT included.