OVER 25 YEARS: Since 1999, Novelty Lights has been a trusted leader in the holiday lighting industry. As a US-based company, our customer service team is close to home and available on your schedule. We’re here every business day, dedicated to preserving the joy our products bring. C9 LED Christmas Replacement Bulbs - Traditional Christmas Light - Outdoor String Light Set - Christmas Tree Lights Novelty Lights retro fit glass LED C9 replacement lamps will update your Christmas light display with the new, energy-efficient;LED light technology. These C9 Christmas lights have 5 ultra bright LED's per bulb, fit into an intermediate (E17/C9);base, and are housed in glass which does not discolor in weathering. While traditional incandescent C9 bulbs use 7 watts (0.059 amps) per bulb, our LED replacement Bulbsuse only 0.75 watts (0.001amps). Therefore, our C9 LED bulbs are the environmentally friendly extremely cost effective way to light up your home or business for the Christmas season with the most brilliant and long-lasting lights around. These LED C9 bulbs screw into our C9 stringers (25' ,100'), our E17 Heavy Duty strings (25', 100' ,330'), our commercial grade bulk 1,000' C9 spools,as well as our vintage Twisted Wire Heavy Duty E17 bakelight strings. 25 Pack of Traditional C9 LED Bulbs Fits a Intermediate Base (E17/C9) Uses only 0.75 Watts (0.001 amps) 120 Volt UL Listed for Indoor and Outdoor Use Dimmable 5 Super Bright LED's Per Bulb 3-Season Warranty 50,000 Hour;Bulb Life C9 Stringers Sold Separately Your satisfaction is our #1 priority and if you have any issues at all please let us know!