3-color temperature sensor - green, cold below 31; blue, warm 89-100 F (32-38 ); red-hot 102-113 F (39-45 ), flashing red. Warning temperature is over 113 F (45).The LED light is powered by tap water. When you turn on the shower head, the water pressure LED is activated and does not require batteries or other power sources. High pressure/energy saving - the shower adopts pinhole nozzle technology, and the outlet is smaller and denser, which can save up to 30% water compared with ordinary showers. Cooperate with propeller rotation to increase the internal pressure of the hand shower. Please note that the higher the water pressure, the greater the friction, which means noise will be produced, but dont worry, it will not cause any danger. Environmental protection/ beauty - Adopting environmental protection, high quality and highly transparent ABS material and non-toxic chrome plating technology, the product is beautiful and durable, resistant to pressure and shock. temperatures high, does not contain lead and does not rust; you dont need to touch the skin during use and you can know the water temperature at a glance. This function is very practical in winter. The Gift of Love - Each package comes with PP cotton filter elements, multi-layer filtration to protect and purify water quality; it can effectively block metal pollutants, rust, sand, materials in suspension and eggs of insects and other particles larger than 5 microns in water. For the health of your skin and that of your family, it is recommended to change frequently and say goodbye to bathing in dirty water the shower connector is a 2cm universal connector, compatible with most shower hoses on the market, please rest assured to buy.