Click Image for more pictures and specifications. Buy 10 per SKU and save 10%.
The brightest bulb this size. For its smaller physical size (smaller size than original 912/921), this Super Bright 5630 SMD LED bulb packs a punch. It has a full aluminum body, is slightly smaller than a 921 incandescent, yes produces a little more light. If you want a an even brighter light, look at our larger 921-17-5630 Elite Series Wedge LEDs. This is part of our Elite Series of bulbs. The PCB base also makes great contact on the first installation. Be sure to browse all of the pictures on this special retrofit light!
This is Cool White which is brighter than Natural White.
For Natural White see part number 921-10-5630-NW and
For Warm White see part number 921-10-5630-WW.
|Visible Light||typically 1.2x as bright, cool color|
|Amps at 12.0v DC (Fluke Actual)||0.13|
|Rated Volts||10-30v DC|
|Overall Length||1 1/4"|
|Overall Width (or diameter)||1/2"|
46 Reviews Hide Reviews Show Reviews
My porch light is 10 times brighter. What a great improvement.
This is our second order of 921 lightbulbs from M4. The first ones have been in for almost a year and we are very satisfied with the brightness and how cool they are when on. We are in the process of replacing all of the old bulbs with leds.
Great replacement bulbs, a bit brighter the LEDs I'm replacing.
Love the bonus M4 drink cosy that came with the shipment. That works really well too!
I really like these lights, they are bright white which helps me see clearly without having to put on my readers. The savings on power drain from the battery also make good sense to me.
The only place to buy led lights
Got this as a replacement for all my trailer bulbs. During the day when I tested they looked great. Went camping and turned on the lights at night and everything in the trailer was bathed in blue light. I had trouble seeing clearly....looked like I had a black light on because everything white in the trailer looked light purple. My mistake for not testing a bulb at night so I cannot return. Will order another temp bulb to test. Love that LED uses less energy because we camp without hookup.
M4 Notes: Color choice is a personal preference; we do offer two other colors. We do ask that customers try one per sku for color and output before installing them all, but work with customers all the time to get them the right product. Kirsten did not reach out to us. Some love Cool White, some do not, it is our goal to provide as much information as possible so the customer can choose the color they prefer. The product was not in error, the color is correct per our Color Range Page, this just did not meet her personal preference.
Bright cool white light excellent for closer proximity to your eye sight like overhead of bed or sofa. Steve was wonderful guiding me and explaining the difference between the 921- 10 vs the 921-17. So I could make an informed decision. Great illumination. Our old light was incandescent warm but it was glommy. I was afraid to buy these bulbs and color would be blueish. But they are not. Great for reading magazines, books or cell phone. On the other hand originally I had ordered 3 but only needed 2, so I called Steve and he made the change in the order before it shipped out . Talk about service!
Purchased this product hoping that we were making the correct purchase. Received product in a timely manner and put in the twelve lights ordered and as directed by paper work. Noticed right away that the lights were brighter then the market bulbs. So far we are very pleased with the lights and their performance. Like the idea of using less wattage and creating less heat.