C9 Christmas Light Edison Bulbs, Vintage Christmas Lights LED, Pack of 5 Vintage Edison Christmas Light Bulbs LED Filament, 1 Watt, E17 Base (C9, Warm White Glass)Size:C9 | Color:Warm White Glass Now you can enjoy the best of the best . . . of both worlds: the look of the most beautiful Edison-style vintage Christmas lights imaginable, in the most long-lasting, energy efficient LED filament Christmas bulb around – the FlexFilament line of LED bulbs from Wintergreen Lighting. These old-fashioned looking C9 bulbs are rated to last up to 20,000 hours, and consume just 1 watt per bulb. They’re also backed by a one-year warranty. Available in either glass or acrylic lenses, the FlexFilament line of bulbs are sure to delight year after year.