Norb SMILE "Sunlike" Full Spectrum A19 LED Bulb - Increases Energy, Mood & Performance - Supports Circadian Rhythm - Near Perfect Color Representation - Technology

Nice and bright. Not sure if they'll help SAD, but they are great light on the kitchen door cooking and don't feel hatch on the years despite massive brightness.

Ridiculously expensive, but they have worked for me. Going MONTHS without seeing the sun, with no discernible difference in illumination between 0900 and 1500 is a cold and gloomy hell that I can't deal with any more. I've installed these bulbs in every room that I spend time in, and they've done wonders for my mood and productivity. I am going to explore more of this company's lighting products, very happy with these bulbs.

Perhaps there is a technical explanation for why these are so expensive. Some very rare earths in the coatings to create the output spectrum? Still, the CREE high CRI bulbs (back when I could still get them locally) didn't cost nearly this much. That and the user reviews complaining about short life. I needed two for sure so I ordered a four-pack to have a couple spares handy. These are for some product photography I plan to do soon, so I was willing to go the distance for the claimed full, even spectrum. UPDATED April 4, 2022: The bulbs produce beautiful photographic results, but with the one-stop absorption of light by the umbrellas, the exposure at EI 800 is f/16 at one-half second. I am using a tripod so this works but I'd prefer a brighter illumination so next I will be trying the Cree 125W-equivalent bulbs (ASIN B089HPRPHQ). While about half the price of the NorbSMILE bulbs, the Cree's CRI is still in the 90+ range.

Bought a 4 pack of the lights for a bedroom in the basement. After only a couple of weeks 3 of the 4 lights just stopped working. Checked the bulbs in other sockets and checked the sockets with other bulbs... they were dead. I was a little upset to say the least. I did a quick search and found their web site and reached out to customer service not knowing what to expect. Well, within 24 hours they had 3 new bulbs mailed out Priority USPS to me with a return label for the defective bulbs! The 5 stars is because of their customer service. The bulbs, when they were functioning were worth it and provided great natural light. Not only could you see the difference but you could actually feel it as well.

I thought I had found the bulb I was looking for but, I was wrong. While these bulbs worked great for a month or so, after that they begin to flicker, and two of them have stopped working totally. We use these bulbs on the lower floor of our home in our animal rooms, and are almost always dimmed to between 50-70%. We are having no issues with the other fixtures on the same dimmer that this bulb is on. I am going to try the remaining 2 bulbs to see if maybe it is just a manufacturing issue with the 3 I have used already. At this time I would not recommend these bulbs to anyone using them in conjunction with a dimmable fixture or wall dimmer.