How do you know if your Christmas lights are LED? - Christmas Light Source Blog
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This is why your LED Christmas lights flicker - gun8
What is the difference between LED and incandescent lights, really? - Christmas Light Source Blog
LED vs. Incandescent Christmas Lights
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C9 Multicolor Smooth OptiCore LED Christmas Light Bulbs
Wintergreen Lighting OptiCore C7 LED Multi-Color Smooth/Opaque Christmas Light Bulbs (25-Pack) 74041 - The Home Depot
LED Christmas Light Vs. Incandescent: Which To Use This Year
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Calculating the Power Usage of LED vs. Incandescent Christmas Lights | WIRED