Changes Colors According to the Water Temperature! Main Features: ✅This product has mini built-in electricity generating devices, no need for batteries, as long as the water flows it will give out light, turn off the water, the light goes out immediately. The color changes according to the water temperature. ✅When water flow, the sensor will light, the water color depends on the water temperature. ✅The product has excellent water conservation function, and connected at the top with the water-saving filter. ✅The product is an externally threaded connector with an internally threaded adapter. Adapter can make the product suitable for a variety of faucet interface. ✅LED emitting color: Green, Red & Blue. Specifications:- LED Color: 3 colors.- Material: ABS engineering plastic.- Internal diameter: 15mm.- External thread diameter: 24mm. Package included:- 1 x LED light faucet.- 1 x connector.