[High Quality String Lights With UL approved]The length of Beewin string lights plug in is 33 ft,which contain 100 cool white glow LED lights,perfect replacement for the battery operated.With UL certified,great value and quality,no danger for electric shock,safety to use. [8 Modes]The string lights have 8 different modes:Combination, In waves, Sequential, Slow Glow, Chasing/Flash, Slow fade, Twinkle/Flash, Steady on.Easy to change the modes by pressing the button on the controller.These playful yet elegant led string lights will make any party more festive.