SuperSpark 5mm LED strobe lights.The Christmas Light Emporium is the home of the original 5mm LED strobe light string - SuperSpark 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 50 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. Specifications: 5mm dimmable LED strobe lights 50 bulbs on green wire 6" Spacing Voltage: 120v 25' total length with 6" lead and tail UL rated for indoor and outdoor use Commercial grade Single molded (1 piece) design with non-removable bulbs improved moisture resistance Full wave rectified for flicker free sparkles Standard male and female end-to-end plugs Connect up to 40 sets end-to-end If one light goes out, the rest stay lit Cool White color temperature = 6000 kelvin