Glass battery, a combination of a waterfall and light effect in your bathroom. It can be used as a sink and bathtub faucet. Adapted for sinks and bathtubs with a faucet hole. Technical specification: * built-in temperature sensor * lights up blue when the water is cold, green when it is lukewarm, and red when it is hot * flashes red when the water is too hot to touch * installation type: central * hole type: single * backlight powered by 4 AA batteries (not included) Package includes: * bathroom faucet * gasket for mounting to sink/bathtub * two screws with nuts for mounting to sink/bathtub * washer for mounting to sink/bathtub + gasket * two hoses for water connection * packed in a box filled with polystyrene, ensuring 100% protection of the goods during transport.