This led luminous shower head (without any battery) is a fun plug and play accessory. Inthe hotel bathrooms, your customers will be surprised and addicted to! It is perfect for children to become autonomous. You can resell it in your hotel shop .This shower head LED light without batteries is only the water pressure activates the LEDs. An accessory easy to install. This product is for all ages. N This is not a gimmick because the color of LEDs corresponds to a temperature, c is ideal for people Haggai, your customers will be surprised and will no longer s without it, they will ask you to kindly provide the same thing. Ideal to make children autonomous. Material: ABS Chrome. Indication of temperature by color: (green the water is below 32 degrees) (the blue water is greater than 33 degrees and below 41 degrees) (The red water is above 42 degrees) This shower filter Calc and saver of water is 1 year warranty.