The TOTO® Gooseneck Vessel ECOPOWER® 0.5 GPM Touchless Bathroom Faucet, 10 Second On-Demand Flow is ideal for high-traffic spaces, providing an elegant water conservation solution. Powered by the force of running water, the ECOPOWER® hydro-turbine creates an electrical current that is stored in rechargeable cells to power the operation of the faucet. No external power source, wiring, or battery replacement is necessary. The ECOPOWER® system is highly efficient, replenishing power stores with no minimum daily usage. The sensor is strategically positioned underneath the spout head to accurately sense the hands for touchless use. The 0.5 GPM 10-second on-demand faucet uses only 0.08 gallons per cycle and is CEC and CALGreen compliant. The on-demand system means that water flows only when needed and cannot be accidentally left running. When hands are present, the water will flow, and when hands are removed, the water will stop. Soft flow technology gives a soft but enriching feel to the water with little to no splashing. Included items: Spout, operating controller, and mounting hardware included. Purchased separately: Water supply line for G 1/2 inch connection.