There is no need for electricity, batteries, external power, open the water source, you can light up. 360 degree universal rotation: the water can easily cover the whole sink, so you will never worry about cleaning the sink in cold winter. Temperature control tricolor: change color with the change of temperature. Cold water, warm water and hot water show different colors respectively When the water temperature is lower than or equal to 31 degrees, it is free to change to blue. When the water temperature is between 32 and 43 degrees, it is green. When the water temperature is between 44 and 50 degrees, it shows red. When the water temperature exceeds 51 degrees, red flashing reminds you to be careful to avoid scalding Quality test: excellent quality is the guarantee of quality. The finished products of the faucet lamp have been tested for many times without water leakage and normal function. Self power generation: self power generation depends water pressure drive, without power supply (battery), safe and environmental protection, service life Motor: high speed strong magnetic motor is adopted to ensure normal driving of generator under normal water pressure for normal LED lighting. Inner core: the inner core is a fully enclosed advanced structure, which can ensure long-term contact with water without rusting, and ensure high working efficiency and stable working state of the motor. Specifications: [interface size] the internal thread interface of 22mm x 1 (fine thread six branch pipe) is adopted. [product size] length 58mm, outer circle 24mm [led quantity] 1pcs [material] ABS engineering plastics Electroplating Package Included: rotatingx1 Notes: Only when the water pressure is enough can the light shine norma Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.