100 LED Christmas Multifunction Battery Operated String Lights with Timer. Brighten up your home this Christmas with these battery-operated multi-function string lights. LEDs are spaced apart on a clear cable, easily blending into most Christmas scenes. This set requires 3x 'AA' batteries (not supplied) and has a lead from the weatherproof battery box to the first bulb. The function changing button is located on the battery box (static, combination, in waves, sequential, slow glow, chasing flash, slow fade and twinkle flash). They feature a memory chip so that the previous setting is remembered, and the 6-hour-on, 18-hour off-timer function will help to preserve the life of your batteries. Suitable for both indoor and outdoor use.