Micro LED White Lights on Ultra Thin Wire- Battery- 2 Sets-20 lights- Fairy-Underwater 20 Micro LED Lights on a 7 Foot Long Ultra Thin Silver String Wire Wire and Light Part Totally Submersible but NOT BATTERY PACK !!! Over to 48+ Hours Non Stop Operating Time Battery Box is 3/4" x 1 1/2"x 2 5/8" and holds two AA batteries These have a 7" lead and lights are 4" apart and are 7' long.