Descriptions:No batteries & wire needed.Seven colors change in cyclicly when the water run through it changes.The built-in LEDs will change the colour of the water coming out of the shower.Low flow，water conservation with a unique fun & soothing experience.The handle of the shower head connects directly into your shower pipe.NOTE: The water pressure MUST be at least 0.1mPa， 0.2mPa~0.4mPa can be better.Specification:Case Material: ABS electronickellingLED Emitting Color: Green，deep blue，light blue，red，pink，orange，yellowInner diameter of tube: 1.5cmOuter diameter of tube: 2.0cmItem size: 21.6 * 3.2 * 3.2cmItem weight: 122gPackage included:1 x LED light shower(without retail package)