It is 12v led rope light warm white led, diameter: 1/2'' leds/meter: 24leds, 30leds or 36leds ,  Length per roll can’t beover than 50meters.
Round 2 wires Led rope light is conducted by two copper  wires, forming single electric circuit, so it produces a static lighting  effect. With a controller, it can be flashing and its speed can be adjusted.
It is widely used for decorating or  illuminating your home, or business creating figure, or building Christmas sign  display in many occasions such as corners, ceilings, staircases, decks,  driveways, boats, galleries, clubs, parties and holiday.
   http://www.lightdg.com