" [Product name]: LED illuminated negative ion water purification shower [Lighting color] :: Temperature control three colors (green, blue and red) [Main material]: PC polycarbonate (drop resistant) [Surface treatment]: electroplating [Xiwaixue Se] & nbsp ;: Illustration by Runan Pinfu / Jie Ding [Water outlet mode]: single water outlet (LED indicator) [Threaded interface]: universal type of 4-point interface [Number of lamp beads]: 12 [Shower specifications]: total length 220mm, diameter 65mm Notice: This shower head is fully driven by the water flow to drive the motor to generate electricity to make the LED bright, if the water pressure in your house is very low, it is recommended not to buy this shower head because the water pressure is too low to start the generator in order to generate electricity. It will not turn on. LED light color: Three-color temperature control: change color with changing water temperature, cold water, hot water and hot water show different colors respectively. When the water temperature is 31 degrees or less, it will automatically display in green. When the water temperature is between 32 and 43 degrees, it is displayed in blue When the water temperature is 44 to 50 degrees, it will appear in red. "