Description FLEXIBILITY: The removable water restrictor is easy to install and clean. Ball and tilt joint allows you to get the perfect angle. Lead free.CHARACTERISTIC: The color of the light is changed by the temperature of the water: hot water - red, hot water - green, cold water - blue. You can judge the color temperature of the light. TECHNOLOGY: Waterfall flow design with LED light. No battery required, sensor motivation depends on water pressure. High-end and exquisite design makes your bathroom more elegant. SAFETY AND ENVIRONMENTAL PROTECTION: No electricity, no battery, powered by water flow. You can use water safely and do not pollute the air. WATER SAVING: Restricts water flow from faucets without reducing water pressure or affecting the washing and rinsing effect. The spray aerosol keeps splashing to a minimum and saves water and reduces energy costs.Features:Condition: Brand NewMaterial: ABSFinish: Electroplating Item Color: Silver Light Color: Green: 31 , Blue: 32~43 Red, Red: 44~50 Flash, Red Flash: 51LED power supply: running water (no need extra battery)Connection size: G4/3 female thread Max. Diameter: approx. 2.7cm / 1.06in Height: Approx. 6.2cm/2.44inch Weight: Approx. 35g Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending the received physical object.