Color LED Faucet Aerator Temperature Sensitive Gradient Lighting Kitchen Bathroom Shower Faucet Aerator Replacement for Kitchen, Bathroom, Bathtub and Sink (2 Pack) 3 Colors Changing Based on Temperature: Blue appears when the water temperature is 32 degrees. Green appears when the temperature is between 33 and 41 degrees. Red appears when the temperature is between 42 and 45 degrees. Red flashes when the temperature is above 46 degrees. A Perfect Gift: As a toy, it entertains children. They will wash their hands more often. Excellent value as a fun gift for children, who love them. Exclamations of surprise and laughter of joy every time they turn on the faucet. Adds a touch of fun and interest to a boring installation. Easy to install. If installed correctly, water will not drip or splash everywhere. No need for another power supply for the automatic electricity generating system. We offer you a wonderful experience. Excellent corrosion resistance: Made of ABS material with excellent corrosion resistance. With precision polishing on the surface and nickel and chrome plating. Perfect for the bathroom or kitchen, a marvel! With self-generating hydraulic drive, no power supply required, it is safe and environmentally friendly. The sensitive faucet light changes color according to the water temperature.