[ C9 MULTICOLOR SMOOTH/OPAQUE NON-TWINKLE LED LIGHTS ] 25 OptiCore multi color smooth/opaque C9 steady LED bulbs and 25-foot white stringer with 25 sockets spaced 12 inches apart. 6-inch lead with fused polarized male plug and 6-inch tail with female plug for easy end to end connections. 25 feet total length. To assemble, simply twist bulbs into sockets. [ NEXT GENERATION LED CHRISTMAS LIGHTS ] Thanks to their superior construction, OptiCore bulbs offer unsurpassed color saturation, ruggedness and reliability. DIMMABLE (dimmer sold separately). OptiCore bulbs feature a single dimmable SMD LED diode that emits a pure beam of light through the bulb’s core. The result is a brilliant, natural-looking glow that fills the bulb with vibrant color. [ POLYCARBONATE LENSES, 200x STRONGER THAN GLASS ] Bulb walls as thick as two typical Christmas bulbs, exceptionally durable. More importantly, the bulb thickness enables the vivid color that recreates the look of vintage ceramic bulbs. REMOVABLE AND REPLACEABLE bulbs (replacement bulbs sold separately). If one bulb goes out the rest stay lit. Colors will never fade, chip or crack. Bulbs rated to 60,000 hours. [ CONNECT 1,000’ OF LIGHTS on SINGLE PLUG ] Safely connect 960 watts, over 1,000 feet of lights, end to end on one plug - only 0.80 watts per bulb, 20 watts (0.16 amps) per set. 120 volt fused male plug and female plug for end to end connections. Powered by STANDARD 120 VOLT household outlet. [ COMMERCIAL GRADE STRINGER for DEPENDABLE PERFORMANCE ] 18 gauge commercial grade SPT1 stringer features sockets with weep holes for trouble-free wet weather performance. Parallel wired; if one socket goes out the rest stay lit. Bulbs are removable/replaceable. Approved for indoor/outdoor use. Long-lasting, virtually indestructible, energy efficient, and beautiful – welcome to the last set of string lights you may ever have to buy. Put simply, OptiCore LED commercial string lights are the most advanced, durable and beautiful commercial LED Christmas lights around. The traditional C9 bulb size has long been a favorite of decorating enthusiasts, whether as Christmas lights, wedding lights, or party lights. But there was never an LED bulb that could match the color saturation and hue of incandescent vintage Christmas lights. Until now. OptiCore LEDs feature a reflective core design that saturates the bulb lens with gorgeous, brilliant light. And OptiCore bulbs are almost indestructible, made of polycarbonate that’s 200 times stronger than glass. For heavy duty, durable outdoor Christmas lights, Christmas wedding lights and commercial party lights, you can’t beat the quality, durability and energy-efficiency of OptiCore LED commercial Christmas lights from Wintergreen Lighting.