SuperSpark 5mm LED strobe lights. The Christmas Light Emporium is the home of the original 5mm LED strobe light string – SuperSpark! It’s our top selling product year after year for a reason; we worked hard with our manufacturing partners to get them perfect! Nothing beats SuperSpark – the best quality, most 5 star rated, commercial grade, field tested 5mm strobe lights available!This is not a twinkle string with a subtle on/off – this is a true *pop* LED 5mm strobe string that creates a fantastic effect in your light display.All 100 of the bulbs on this string strobe randomly to create the effect of tiny camera flashes. When wrapped around a tree, through shrubs or on any structure, this string will make your display sparkle.These can be left on all night to create a magical environment.