AmeriLuckCobalt Blue Colored LED Filament A19 Light Bulbs, 40W Equivalent (4W), E26 Medium Base (Blue, 4 Pack)

See what I just did there? LOL that was my imaginary 12 step program for lightbulbs junkys! LOL but in all seriousness, AmeriLuck has been my number one provider of the coolest and most unusual amazing lightbulbs in recent memory. And this one certainly DID NOT disappoint! All of their products are AMAZING! And I'm not even sure what this one does or how it works! But it's freaking awesome! It, as the product description explains, looks completely clear when turned off, but once plugged in turns beautiful bright blue! FIVE STARS BABY!!

It’s very very blue! So if you want a soft blue don’t go with this one. This is a very very very blue!! Lol

Put in my bathroom for a Halloween party. As can be seen in the picture, the room was very blue. Great ambiance.

We bought these to color the yard lights during Christmas. Since we had already bought 'blue' bulbs that were very expensive and did not have a good blue color we were very pleased with these... the color was a deep blue. Very pleased with them.

Little pieces of one of the bulbs were broken inside the bulb. It didn't work at all.

Strobe effect

It is blue! I can see it from the corner. We love it’s brightness!

Many of my neighbors have recently installed blue LED lights to show their support for our LEOs. I’ve been in law enforcement for most of my life, and we often feel hated and unappreciated, so it’s a great feeling to drive down the street and see all those blue lights. When I saw these, I knew it was time to change mine, too.These bulbs are only 4 Watts each, but they’re BRIGHT. I can see these babies from a half mile away. They produce a super-bright, piercing blue color, especially without a shade or frosted cover. When they’re off, the bulb is clear and the filament is white.All 4 of my bulbs arrived undamaged, and work perfectly. I have 3 of them on a smart switch from dusk to dawn, and they’ve been in use for more than a week. I see them every night when I walk, and there is no flickering or flashing with any of my bulbs.Oh, here’s something interesting… I worried that my security cameras might have a problem. Blue light isn’t the best for actual illumination, and I feared that any video of someone burglarizing my vehicle would be useless. But in video at night it appears to be well-lit by regular white light. (I use Arlo cameras.)If we don’t start showing our respect and support, the brave men and women that risk their lives to protect us may disappear. It’s not a perfect system, but if we lose the sheepdogs, the wolves WILL take over.Pros+ @ 4W vs 40W = 90% electricity savings+ Show your support of law enforcement, or just use for holidays+ Security cameras still work the sameCons- Warranty is only 1 year