Optimise your evening light environment using the Better Sleep Bulb
How To Use The Better Sleep Bulb
One bulb, three modes:
The bulb fits into standard E26 & E27 sockets.
It’s controlled by turning your regular light switch on and off. There’s no app, Bluetooth, remote, or dimmer required.
Rapidly cycling the bulb on and off transitions it between modes, from Day to Evening to Night.
If the bulb is turned off for longer than 10 seconds, it automatically remembers its previous mode when next turned on.
If you connect the bulb to a dimmer switch, leave the dimmer at maximum intensity and do not adjust. This bulb does not dim.
Day Mode → A full-spectrum, incandescent-like (2700K) white light that provides clear illumination to keep you focused and productive during the daytime, without making your body feel stressed, tense, or overstimulated.
Evening Mode → A dimmer, warmer (1800K) sunset tone that subtly relaxes you, lowers alertness and prepares you for rest by removing blue light, the same cue that nature provides to signal that the day has ended.
Night Mode → The dimmest setting with deep red (1200K) firelight tones that ease you into deep and restorative sleep, the closest thing to the darkness signal your biology needs at night, whilst still being able to see.
Why this light feels different
Infrared-Enriched (to 1000nm)
Our bulb brings back the infrared wavelengths found in sunlight and fire, the calming, soothing and restorative half of nature’s light that modern bulbs stripped away.
These longer wavelengths penetrate deep into your tissues, where they support cellular energy production and ease oxidative stress, helping your body reduce inflammation and improve recovery.
Flicker-Free Zero-Stress Design
Most modern LED bulbs flicker hundreds–to–thousands of times per second. You can’t see this, but your brain perceives it, and it increases visual strain and stress in your nervous system.
The Better Sleep Bulb uses a fully flicker-free driver so your eyes, brain and nervous system stay calm in its presence, from day to night.
Blue-Light-Free Modes
Our Evening and Night modes remove blue and green light. the wavelengths present in sunlight that your brain reads as “daytime.”
Without those alerting signals, evening melatonin rises naturally, cortisol levels fall and your nervous system shifts into its nightly wind-down, allowing you to feel calm, settled and ready for deep sleep.
Blue Light Blocking Glasses Recommendations
There will be times when you can’t fully control your lighting environment, such as when travelling, working late, or spending time in brightly lit public spaces.
In these situations, amber or red-tinted blue light blocking glasses can help protect your circadian rhythm from the melatonin-suppressing wavelengths. They are a useful backup tool when your light environment is not sleep-friendly.
At In Rhythm, we align ourselves with brands of integrity whose mission is to positively influence the circadian health of communities across the globe.
We’re partnered with Block Blue Light and recommend their high-quality blue light blocking glasses for customers in:
UK/EU, USA, Australia, and New Zealand (all of these links provide 20% off).
FAQs
-
Size: Φ60*119mm /A60
Base: E26 (compatible with E27)
Voltage: AC100–240V, 50/60Hz, worldwide compatibility
CCTs and Brightness: Day mode (2700K, 300lm±10%), Evening mode (1800K, 100lm±10%) and Night mode (1200K, 50lm±10%)
CCT Switching: Toggle switch → cycles through the 3 modes
Memory: Returns to last-used mode after being switched off for 5 seconds
Blue & Green Light:
2700K: G=70.3% B=2.8% | 1800K: G=60.6% B=1.0% | 1200K: G=44.3% B=0.1%
Infrared Output: Extended spectrum up to 1000nm in each modeDimming: Not compatible with dimmer switches (internal driver manages brightness per mode)
Power Use: 2700K: 10W±0.8W | 1800K: 7W±0.5| 1200K: 4W±0.5W
Beam angle: 230°
Color quality (CRI): 2700K: ≥98 | 1800K: ≥98 | 1200K: ≥70
Flicker: Zero visible flicker
Thermal limit: LED board <85°C at full power
Lifetime: 30,000 hours
Safety Certifications: CE + RoHS, FCC, RG0 EMC compliant, HS Code: 9405429000
Warranty Policy: 12 months -
Yes, although we are currently unable to retail to Australia and New Zealand, but this is something we are working on. We ship all of our bulbs from the United States to domestic and international locations. Shipping to countries outside of the US currently costs more, but we’re working to bring these costs down soon.
-
Yes. It’s a standard A60/A19 bulb designed to fit E26 and E27 household light fixtures, so you can simply swap it in like any other bulb (provided it fits). There’s no rewiring, apps, or extra equipment needed.
-
Not yet. Our first release comes in just one shape and size, allowing us to focus on perfecting performance and spectrum quality. Additional shapes are planned for future releases.
-
No. Because the bulb already has three built-in brightness levels matched to circadian timing, it should only be used with a standard on/off switch — not a dimmer.
-
In Day Mode (2700K), the light feels like normal indoor brightness — essentially the same as a standard warm-white household bulb. It’s bright enough for everyday tasks, without feeling harsh or overstimulating.
Switching into Sunset Mode (1800K) gives you a noticeably softer, more calming evening light. It’s gently dimmer than Daytime Mode and creates that wind-down atmosphere your body naturally responds to.
Finally, Night Mode (1200K) shifts into a deep red, low-stimulation glow. This setting is significantly dimmed and is designed for nighttime visibility without disrupting your biology.
-
Yes. There is no UV, no harsh blue light at night, no flicker, and no apps or EMF-based smart controls. For infants, Night Mode (1200K) is ideal for night feeds, diaper changes and parental soothing without disrupting anyone’s melatonin.
-
The estimated receipt of our next production run is late December 2025. Bulbs will be shipped as soon as possible.
-
We offer a 30-day satisfaction guarantee from the date your bulb arrives. If it’s not the most comfortable and calming evening light you’ve experienced, simply contact us and we’ll make it right.
Share your feedback
Get in touch with us to share your thoughts and feedback!
We would love to hear from you via email – team@inrhythm.earth