100% Brand New and High Quality. No need for batteries and external power supply, it will light up when the water runs down Great for bathroom, make the bathroom more dreamy color: When the faucet senses the water flow, it will activate the silver LED light The LED color will change according to the water temperature No battery required, the water power mixes the light and water, Brings a fantastic world Easy to install and remove Automatically display 3 colors when the water is flowing Main colors are green, red and blue 1. When the water temperature is 31 degrees Celsius, it will automatically display green 2. When the water temperature is between 32 degrees C ~ 43 C, blue will automatically show 3. When the water temperature is between 44 C ~ 50 C, red will automatically show 4. When the water temperature is higher than 51 C, the red will flash immediately Fits all standard connectors, easy to install. Provide you with a pleasant bath and a wonderful experience the ideal bathroom to make the bathroom more beautiful Shell Material: ABS Main LED Color: Green, Blue, RedExternal Thread Diameter: 2.0cm Item size: about 22* 7.5* 3.8cm Item weight: 168g Package content: 1 * LED shower head (without retail packaging)