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C7 Christmas Lights

C7 LED Christmas lights use a candelabra E12 screw base — the smaller of the two standard outdoor bulb sizes. The Christmas Light Emporium carries C7 ProCore® replacement bulbs in faceted and smooth lens finishes across a full color range, C7 ProCore® string sets (25 lights, 25'), and C7 LED filament vintage bulbs. C7 is the classic choice for indoor Christmas trees — the larger bulb silhouette gives that traditional, old-school incandescent look. Outdoors, C7 is used for rooflines, window outlines, doorway framing, and architectural accents.


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Everything You Need to Know About C7 Christmas Lights

C7 LED Christmas lights from The Christmas Light Emporium use a candelabra E12 screw base — the smaller of the two standard outdoor bulb sizes (C7 vs. C9). The C7 format is distinguished by its larger, more visible bulb profile compared to 5mm string lights, making it a popular choice for indoor trees where the traditional incandescent look is the goal.

What's in This Collection

C7 ProCore® Replacement Bulbs — Sold in packs, for use in C7-compatible stringers. Faceted and smooth lens finishes. Colors: warm white, cool white, red, green, blue, orange, purple, pink, teal, gold, multicolor. Twinkle variants available.

C7 ProCore® String Sets — Stringer and bulbs bundled together; screw the bulbs into the stringer sockets. 25 lights, 25', 12" spacing. Faceted and smooth lens options. Same full color range.

C7 LED Filament Vintage Bulbs — Transparent shatterproof bulbs with a vintage filament look. Available in select colors.

C7 Use Cases

Indoor Christmas trees: C7 is the classic choice for decorating indoor trees — the larger bulb silhouette recreates the traditional old-school incandescent look.

Rooflines and architectural accents: C7 is a common choice for outlining rooflines, framing windows and doorways, and accenting architectural features outdoors.

Note on outdoor tree wrapping: Outdoor tree wrapping is typically done with 5mm string lights (sometimes M5 or G12) — not C7 or C9. C7 and C9 are occasionally used around tree canopies for a modern visual effect, but this is not their primary use case.

C7 vs. C9 — Which Do I Need?

C7 (E12 candelabra base) is smaller than C9 (E17 intermediate base). C9 is the standard for large-scale roofline and architectural outlines where maximum bulb visibility at a distance matters. C7 is well suited for indoor trees and smaller-scale architectural details where a traditional bulb look is desired at a slightly more compact size.

Faceted vs. Smooth ProCore®

Faceted bulbs have a multi-faceted surface that catches and reflects light. Smooth bulbs have a clean, rounded finish for a uniform glow. Both available in the full color range.

Frequently Asked Questions

Are C7 ProCore® bulbs dimmable? Steady-on C7 ProCore® bulbs are dimmable. Twinkle variants may not be compatible with dimmers.

What base does C7 use? Candelabra E12 base — standard for C7 stringers.

Do C7 sets come with bulbs pre-installed? No — ProCore® sets include the stringer and bulbs separately. Screw the bulbs into the stringer sockets.

What's the difference between C7 and C9? C7 uses an E12 base and is smaller; C9 uses an E17 base and is larger. C9 is the standard for rooflines and large-scale displays.

What's the Reindeer Proof™ Warranty? Our in-house warranty covering manufacturing defects and performance failures. Duration varies — see individual product pages.

Browse Related Collections

C7 LED Bulbs | C7 LED Light Sets | C9 Christmas Lights | C7/C9 Stringers | LED Christmas Light Bulbs

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