Umbra Tidal Sensor Soap Pump Tidal Sensor Soap Pump by Umbra Constructed of plastic and plated nickel Touch free sensor pump holds 12 fluid oz. (355 m); blue sensor light; on/off switch; 4 AAA batteries required (not included) Measures 3-1/4 Inch by 3-1/2 Inch by 8 Inch Designed by Jordan Murphy