Automatic 8 Leds 3 Colors Changing Light Shower H-ead Round Circle Design Bath Sprinkler Temperature C-ontrol Sensor Inductor For Bathroom Washroom Po There is no need for electricity, batteries, or external power. Turn on the water source and the light can be turned on Colorful self changing color: multi color free transformation Very beautiful Colorful lights change color circularly, fashionable and practical. Independently researched and developed, it plays a role in pleasing mood, relieving stress and eliminating fatigue by relying on color change. You can give gifts for your own use [LED luminous color] temperature sensitive color change / temperature control tricolor[interface size] 20mm internal thread (universal interface)[product size] length 150mm width 150mm thickness 15mm[number of LEDs] 8-12pcs (the number of lamps can be customized as required)[packaging method] color box packaging[material] ABS engineering plastic[surface treatment] electroplating