This 120V LED Flexible Strip Light requires no external drivers and external power supplies, instead it uses AC/DC rectification technology right on the flexible PCB strip. The 164ft. reel is cuttable in 4” increments which allow for a more custom finish. Another amazing part of the 120V LED Flexible Strip is the entire 164ft. can be used continuously without the risk of voltage drop or loss of light output. Evenly lit from the first LED to the last. With its IP65 rating, the strip can be installed indoors or outdoors. This product is not rated as submersible, do not install underwater.