C9 Cool White SuperSpark® LED Strobe Christmas Light Bulb
C9 Cool White SuperSpark® LED Strobe Christmas Light Bulb
- Full-bulb, random-start strobe in crisp 6400K cool white — the sparkle you'd expect on a Rockefeller Center tree
- Mix into C9 socket stringers across big trees, rooflines, and architectural features
- Commercial SuperSpark® LED — a staple of professional and computer-controlled light shows
- Nearly indestructible polycarbonate lens — unlike common polystyrene bulbs, it won't break or degrade outdoors
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Ships within 24 hours from our D/FW, Texas warehouse. Order by 12pm Central (Mon–Fri) and it ships today. Shipping details
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Not sure which bulb size? Read our C7 vs C9 guide.
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Picture thousands of cool, crisp white flashes dancing across a grand Christmas tree or outdoor display — the kind of dazzling strobe effect you'd expect from a professionally lit Rockefeller Center tree. The C9 Cool White SuperSpark® LED Strobe Bulb produces that exact effect: full-bulb, random-start strobing in a clean 6400 Kelvin cool white that shines brilliant and sharp against winter nights.
These bulbs are built for large-scale impact. Use them in C9 socket stringers draped across massive Christmas trees, towering outdoor evergreens, rooflines, or architectural features. They're a staple of computer-controlled holiday light shows, professional holiday lighting installations, and any display that demands dramatic, attention-commanding color.
- C9 size, E17 base — fits standard C9 sockets on any stringer
- Cool White SuperSpark® LED — full-bulb strobe effect, 40–180 random flashes per minute
- 8 super bright SMD LED chips for superior light dispersion and brightness vs. traditional xenon strobes
- 2" long, faceted lens — hard-to-break construction, IP44 rated for indoor and outdoor use
- 120V — plugs directly into existing C9 sockets, no extra transformer needed
- Random start — strobing begins immediately when power is applied
- Nickel base
- Sold individually
- Backed by our Reindeer Proof™ Warranty
String Light Specifications
| Specification | Value |
|---|---|
| Review Rating | |
| Item SKU | TCLE-C9-STROBE-LED-CW |
| Warranty Length | 1 Season |
| Product Style | Bulb |
| Usage | Indoor/outdoor |
| Quantity | 1 Unit |
| Product Grade | Commercial |
| Light Display | Strobing |
| Bulb Style | C9 |
| Bulb Type | LED |
| Specification | Value |
|---|---|
| Voltage | 120v |
| Dimmable | No |
| Light Color | Cool White |
| Color Temperature | 6400 Kelvin (cool white) |
| Lens Finish | Faceted |
| Base Material | Nickel |
| Base Size | E17 |
| Number of LEDs | 8 |
| Flash Rate | 40-180 Flashes Per Minute |
| Specification | Value |
|---|---|
| Review Rating | |
| Item SKU | TCLE-C9-STROBE-LED-CW |
| Warranty Length | 1 Season |
| Product Style | Bulb |
| Usage | Indoor/outdoor |
| Quantity | 1 Unit |
| Product Grade | Commercial |
| Light Display | Strobing |
| Bulb Style | C9 |
| Bulb Type | LED |
| Voltage | 120v |
| Dimmable | No |
| Light Color | Cool White |
| Color Temperature | 6400 Kelvin (cool white) |
| Lens Finish | Faceted |
| Base Material | Nickel |
| Base Size | E17 |
| Number of LEDs | 8 |
| Flash Rate | 40-180 Flashes Per Minute |
Product Help
Questions & Answers
Q: What size socket does this fit?
Q: Is this the same bulb used in SuperSpark® 5mm strobe string lights?
Q: What are the most popular uses for these bulbs?
Q: Are these sold in packs or individually?
Q: What is the color temperature of the cool white version?
Need broader help? Visit our Christmas Lights FAQ for quick answers on rooflines, bulb sizes, clips, accessories, and planning your display.
Here's What Other Memory Makers Are Saying:
If you're buying from Christmas Light Emporium, you can be rest assured that you're getting high quality lights and strobes. This is by far my favorite place to order from!
'Favorite place to order from' is about the highest compliment we get, so thank you, Cynthia. Glad the C9 SuperSpark® strobes are pulling their weight — they're the ones that make neighbors slow down. Enjoy the glow. — Darren, The Christmas Light Emporium
These C9 strobes are great when they work. I have bought quite a few of these last year and then had to buy replacements this year- one of which was dead on arrival. The quality is very iffy and just be prepared to replace some after one season so order more than you think you need.
Thanks for your candid review, Dustin! We appreciate you sharing your experience with the SuperSpark LED Strobe Light Bulbs that you purchased from us back in December of 2023. You bring up a great point about their unique quirks.
Here’s a fun fact: C9 strobe lights actually started out as a theatrical lighting trick—designed for the drama of indoor stages, not the wilds of winter! It wasn’t until some extreme Christmas decorators (we salute you!) started using them outdoors that manufacturers began beefing up the enclosures for better moisture resistance. Even so, the occasional build-up of interior condensation is still a thing—not just for our strobe lights, but for all C9 strobes on the market.
We know it’s not ideal, and we want your lights to shine bright all season. If you run into any issues, remember our bulbs are covered by a 1-season Reindeer Proof™ warranty. Just reach out to support@thechristmaslightemporium.com and we’ll help get things sorted. Also consider that a lot of decorators have switched over to using our 5mm SuperSpark strobe light strings instead of the C9 strobe lights. The 5mm strings have a 3-season warranty - just something to consider. Happy decorating and thanks again for taking the time to share your review.
Bought 25 to alternate on an 50 light string. So impressed with them, I bought another 25! Love them!
Awesome! I wanted to add some sparkle to the yard and I found it. Plus I can use them for my Halloween display as well.
Nice lights
Ok lights
Love these. The entire neighborhood is envious of these in our display.
Again, another perfect addition to my Christmas display!
I love this strobe bulb. I had issues with two bulbs... I emailed customer service and Darren said not a problem and sent another two bulbs out to me. I was super impressed by the excellent customer service!
Pretty decent C9 LED Pure White Strobe. Looking forward to having a few strobes in our display next year. Probably should have ordered more of them while they were still in stock.
The case employed for the housing appears to be the perfect blend of size & strength for durability.
Hi Pat and thank you so very much for taking the time to share your review! We hope those C9 SuperSpark strobes are lighting up your holidays with plenty of sparkle and cheer. If you have any fun display photos or more thoughts to share, we’d love to see what you’ve created! Wishing you a bright and merry season full of joy and fun! —The Christmas Light Emporium Team
I run dozens of the old hexagon Xenon strobes in the yard, but they are no longer made and each season I lose a few more to age. For the past 5 years I have tried every brand of Xenon and LED there are, and almost all were just blinkers...no pop. Can't speak to their durability yet, but these SuperSpark strobes certainly deliver the pop I'm looking for.
Hi Michael,
Thank you for the fantastic feedback! We’re thrilled the SuperSpark LED Strobe Bulbs finally bring that genuine Xenon “pop” you’ve been searching for. It’s awesome to hear they live up to the legacy of your classic strobes. Let us know how they hold up! Wishing you a bright, sparkling holiday season! —The Christmas Light Emporium Team
Make my display top notch!
Give off great loght.
Added 25 on a 50 string. So impressed I added 25 more!
These lights will really make your display pop! Just **** right in to a C-9 light string!
It’s really a statement, very crowd pleasing and bright . Only problem, 2 out of 20 didn’t work
It’s really a statement, very crowd pleasing and bright . Only problem, 2 out of 20 didn’t work
It’s really a statement, very crowd pleasing and bright . Only problem, 2 out of 20 didn’t work
It’s really a statement, very crowd pleasing and bright . Only problem, 2 out of 20 didn’t work
awesome product!!!!
Excellent company to order from. Received my order super quick. Although one strobe didn't work overall I'm happy with everything. Would definitely order again
The bulbs are great! They seem to handle the weather much better than old lights. I love the center design, they show up much better. Definitely will be purchasing more.
Nice lights, just slower flashing
Great color quality and brightness have been very happy with them. Hold up very well to harsh Illinois winters. Own over 200 of them now!!!!
Love these lights
These lights are great
Easy order, fast shipping, looks great
Who Nose Lights Better Than Rudolph?
Rudolph's Christmas Tree Light String Calculator can help you determine how many strings lights you will need for your tree.
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