Rating bulbs within the esoteric lighting space
"Great function. Product is an ace. I’ve used daylightco’s & yours are better."
The Bulb
Circadian Rhythm Light Bulb
3–in–1 Red, Amber and Day. Simply flip your light switch to change the mode. Flicker-free. Zero EMF.
1 Bulb. 3 Colors:
- Install Bulb into any standard (A19 E26/E27) socket.
- Switch between modes by turning it off and on again within 6 seconds.
- Leave the bulb on when it's in your desired mode.
- If using with dimmer, keep dimmer on full power.
Introducing circadian aligned lighting into your home creates a feeling, before you can explain it.
Days inside now feel more like outside, supporting your flow-state, focus, and productivity.
Evenings become cozy and feel candlelit. The living room becomes a family room.
At night deep red is enough to see by, yet gentle enough that a trip to the kitchen doesn't jolt you awake.
Most people notice the evenings first. Then they start noticing every other bulb in the house needs to be replaced.
Shipping
All orders ship from our US warehouse in 1-2 days.
International orders ship DDP (Duties & Taxes Prepaid) from our US warehouse - meaning all import fees are included at checkout, with no surprise costs on delivery.
Chroma offers optional Shipping Protection at checkout to provide customers with added assurance against lost, damaged, or stolen packages. By opting in and paying the associated fee, you agree to the terms and conditions outlined in this policy. See Shipping Protection for more details.
Returns
The Bulb is included in our 100 Day Money Back Satisfaction Guarantee. If you don't like the bulb after trial, email us at hello@getchroma.co. See Returns & Refunds for more information on this policy.
Channels:
• 660nm Deep Red – Mel-DER: 0.002
• 1600K Deep Amber – Mel-DER: 0.153
• 3800K Daylight – SSI:80 • TM30RF: 87.4 • TM30RG: 93.7 • Mel-DER: 0.81
Power: 7W red · 7W amber · 9W day
Input: 100–240 VAC, 50/60 Hz
Form & base: A19, E26 / E27
Flicker: Flicker-free
Compliance: CE · RoHS · WEEE
The Bulb that follows The Sun.
3800K Daylight
Day Mode
Day Mode is where THE BULB really shines. Most bulbs flicker constantly and use the same harsh blue wavelengths as your phone screen. THE BULB only uses wavelengths that mimic the suns. The result is natural-feeling light that supports flow-state and a strong circadian rhythm throughout your day. You'll have to feel it to believe it.
1600K Deep Amber
Amber Mode
Enjoy a rich amber glow with that mimics the soothing tones of a natural sunset. This means your body gets the signal to start winding down for the night. Use this mode when the sun sets, during dinner, or watching TV before bed. This mode is slightly dimmed for peak coziness.
660nm Deep Red
Night Mode
Pure deep red. The easiest way to support melatonin is to avoid blue light in the evening. Night Mode has you covered with enough light to see without wrecking your sleep cycle. Use this mode an hour before bed to enjoy your favorite late-night activities or reading a good book.
Against the bulb already in that socket:
Your Old Bulb
The Bulb
Modes
One
Three
Harsh dark blue
Full output, all day
Cut in Day Mode, none in Night Mode
Flicker
Typical
Flicker-free
Install
Screw in. Install app.
Screw in. No hub, no app.
Learn more about The Bulb
You can use it in a socket that has a dimmer if the dimmer stays at full power but The Bulb V1 does not support dimming.
We dimmed the amber and red modes for you, by default.
How do I change the setting?
Your existing wall or lamp switch.
How does that work exactly?
Cycling the power steps you through the modes. Flick it off and back on to move to the next one. It always starts on Red.
What if the bulb has been off for a while?
After six seconds off, it always comes back on red. So you don't blast yourself with the daytime spectrum walking into the bathroom at 2am.
What are the three modes?
Day is the full daytime spectrum. Evening is amber. Night is pure red.
The valid complaint about LEDs is usually one of two things: the spectrum or the flicker. Neither is inherent to the technology.
Most LED bulbs are built to hit a brightness number at the lowest possible cost, which gets you a hard spike in blue, a hole where violet should be, and a driver that flickers.
LED is also the only technology that lets us put three distinct spectrums inside one screw-in bulb and move between them with the switch you already have on the wall. That's the trade we made. The answer to a badly built LED is a well built one.
An incandescent gives you a warm spectrum and real near-infrared. It also gives you exactly one spectrum, all day, forever. THE BULB is built around the idea that the light should change as the day does. If you want incandescent-style NIR, run both, they're solving different problems.
Incandescent is great and has its place, this is the background signal in the rest of the house.
Yes it's flicker-free. Flicker index at 2ft: 0.0036
Shipping
All orders ship from our US warehouse in 1-2 days.
International orders ship DDP (Duties & Taxes Prepaid) from our US warehouse - meaning all import fees are included at checkout, with no surprise costs on delivery.
Chroma offers optional Shipping Protection at checkout to provide customers with added assurance against lost, damaged, or stolen packages. By opting in and paying the associated fee, you agree to the terms and conditions outlined in this policy. See Shipping Protection for more details.
Returns
The Bulb is included in our 100 Day Money Back Satisfaction Guarantee. If you don't like the bulb after trial, email us at hello@getchroma.co. See Returns & Refunds for more information on this policy.e.
Overall rating: 5.0 / 5 from 4 reviews.
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Reviews
Too good.
"I am bummed I only got to buy 6 of them. Now that I have a comparison with other "circadian lights" I just want to toss out the old ones and buy a bunch more Chroma The Bulbs."
It’s awesome
"Love everything about the bulb. The packaging, the tech, and, most importantly, the light settings. I got one to try it out before I made the switch and I’m on the waiting list to get another one."
Transformative
"If you want to go from always on to natural flow, you need a bulb that can make the journey with you. This is that bulb."
