Twinkle Star LED Party String Lights are 11.5 feet, complete with color-changing LEDs! A rainbow of color flows throughout these lights. Note: Twinkle Star Lights must be plugged in to work. However, to turn these off, you must unplug the piece. It will not turn off simply with a press of the button, it must be unplugged. To turn on and off, it must be either plugged in or unplugged. Length: 11.5 feet Lights do not include batteries, but instead must be plugged in to an outlet.