1. The product buit-in device for mini generating electricity, illuminated by water without battery, the light will go out when the water was turned off.
2. The illuminated colour will change according to the water temperiture. If the water temperature under 26℃±2℃, the shower will emit blue light. If the water temperature between 26~36℃±2℃, the shower will emit green light. If the water temperature between 36~45℃±2℃, the shower will emit red light. If the water temperature over 45℃±2℃, the shower will flashing red light.