Uphome Color Change by Water Temperature Handheld Showerhead Hand Shower Self-Powered Led Rain Shower Head (H10) 3-color-changing Water Temperature Sensor hand shower.Color of LED lights changes automatically according to water temperature:GREEN-Cool under 31C, BLUE-Warm 32-38C, RED-Hot 39-45C,FLASHING RED- Warning Hot over 45C. Power by running water,LED shower head,no need of energy supply.Has 15 LED light. This product adopts joint 20 mm (common interface) external thread.Universal components; fits on all standard shower plumbing, no tools required - installs in minutes without tools Material: ABS. Dimension: L22cmW8cm H5cm. Net weight:0.168kg. Metal Color. Note: For dimension,1-2 cm deviation is allowed,because of artificial measurement. For weight,10-20g deviation is allowed,because of artificial measurement.