These beautiful light strings create that fairy ambiance like nothing else can. The string contains 91 very tiny (just bigger than a grain of rice) white, blue or pink LED's spaced approximately 2" apart. The extra small diameter wire is coated with a silver plating, in order to add to the fairy look and increase light reflection. The strand is approximately 16 feet long from first LED to last, and is waterproof from the first light to the end of the wire. Run time is 15+ hours and uses 3 AA batteries.