16x31 inch; Built-in 40 RGB LED lamp; No battery needed; Visually displays current water temperature; LED color changes according to water temperature; LED light is activated when the faucet senses water flow; Mode: Blue: </= 29'C; Green: 30~39'C; Red: 40~49'C; When the water>49'C be careful to avoid being burned red flashing prompt; Service lifetime: >6000 hours; Environmentally-friendly and energy-saving; Stylish and durable easy installation; Clean the surface regularly with water and wipe with a soft cloth; For difficult stains or spots use a mild detergent or colorless glass cleaner; Give yourself a gift with this stylish shower head and give your bathroom decor a modern update