These 17 meters long LED lights with a diameter of the ball 0.75in (19mm). It has a smart remote control. 8 selectable lighting modes: combination, in a wave, sequential, slow-glow, chasing/flash, slow fade, twinkle/flash, steady on. Adjustable brightness, using dim +/- to adjust suitable brightness, suitable for different scenarios. Memory function: upgrade memory function will keep the last lighting modes until you change, avoid setting again and again (remote control sensing distance 49FT).