No batteries and external power supply, it will illuminate after water flows down. Automatic light switching. 7 color are displayed automatically when water flow. Main colors are Green, Red & Blue.LED Emitting Color: green, blue, red, etc ABS electronickelling material, excellent resistance, durable.Transforming the stream of water into a beautiful of light.Brightness is such enough even no other lighting fixtures need.Fits all standard connectors, easy to install. Offer you a bath & a wonderful experience.Ideal for bathroom to make it more fantastic. The change of LED color will not be subject to the temperature of water.Calcium sulfite ball of energy, beauty and health, increasing cell viability.A spa shower head can relax yourself after working. activation ceramic balls, increase oxygen, diastolic pressure, reduce fatigue.High-density filtersDetachableConvenient for cleaningEnergy ball removal of odors and impuritiesRemovable water panel for easy cleaning200% Pressurize and saving water 30%Health bath Interface size: shower 20mm external thread interface is a general-purpose interfaceWhen the water temperature is above 51 degrees, the red light flashes, reminding you to be careful of scalding!Size: diameter 80mm, height 102 mmLED quantity: 15PCSMaterial: ABS engineering plastics1 x 7 color Led Shower head