150CT LED Firecracker Lights are a strand of 150 warm LED lights on a silver wire. Lights are multi-functional and include 8 built-in setting options such as: combination, in wave, sequential, slo glo, chasing/flash, slow fade, twinkle/flash, and steady on. The strand is battery-operated and requires 4 AA batteries (not included) to cast its glow. but purchase does include a convenient remote to easily change settings or turn the lights off completely. The battery pack features a hook on the top for easy hanging display and the lights measure 25" from top to bottom.