AquaMark&reg; Exciting 7 Colors Changing Super Bright LED Shower Head / Water Pressure Powered (No Batteries - No Electricity) / Unique & Fun Showerhead for Kids, Adults and Family No batteries &amp; No Wiring - LED lights are powered solely by the water pressure Transforms boring shower time into a fun filled and exciting illuminated water jet experience Chrome finish :: Strong water pressure :: Swivel connector to adjust the direction of the water Colors change automatically when water is turned on - 7 bright colors; Color changes every 5 seconds The shower head needs to be tightened and sealed with thread tape sealer to the wall pipe otherwise it can leak. Easy and fast installation; no tools or hardware required