Chroma Sky Portal Mini light therapy device on a white background

Chroma Sky Portal Mini on a tripod next to a laptop on a desk

Chroma Sky Portal Mini device on a white surface with a gray background

Person holding a blue duffel bag and taking out a Chroma Sky Portal Mini out of the bag with a gray background

Chroma Sky Portal Mini on the armrest of a gray sofa with an orange pillow and a lamp on a side table against a textured wall.

Chroma Sky Portal Mini device on a tripod with warm lighting

Sky Portal Mini

Name: Sky Portal Mini
Brand: Chroma
SKU: CHROMA-SKYPORTAL-MINI
Price: 275.00 USD
Availability: InStock

Ultra Portable Circadian-Aligned Lighting

4.9/5 - 28 Reviews

Take your flicker-free, circadian-aligned light with you. Stimulating Daytime White + Relaxing Sunset Amber. 8000mAh battery bank.

$275.00

HSA/FSA Payments Accepted

Next batch shipping Janurary 2026.
Free US shipping. International flate-rate.

100 Day Satisfaction Guarantee.

5 Year Warranty.

How do I use the Sky Portal Mini?

For daytime use, set the Sky Portal Mini to maximum brightness and dial it all the way to daytime white while the sun is still up. This invigorating light is engineered to stimulate OPN3, OPN4, and OPN5 - non-visual photoreceptors that help boost alertness, focus, and mood.

As the sun begins to set, gradually shift the settings toward a deeper amber tone, ending with pure deep amber and boosted 660nm deep red. This transition mimics the sun’s natural progression, helping your body wind down, increase melatonin production, and prepare for restorative sleep.

After dark, DO NOT use the highly stimulating white channel, instead set the device to 100% Deep Amber and dim to a level that is comfortable.

It also doubles as a portable power bank to keep your other devices charged on the go.

How does it work?

The Sky Portal Mini uses a custom-engineered white light channel that removes the harsh, eye-straining dark blue spike found in most indoor lighting. In its place, it delivers a balanced spectrum rich in beneficial cyan (OPN4 stimulation) and violet (OPN3 stimulation) wavelengths.

OPN3 is linked to mood regulation, hormonal balance, and mental clarity. OPN4, also known as melanopsin, plays a key role in regulating your circadian rhythm, boosting alertness, and supporting stable energy during the day. Together, these non-visual photoreceptors help you stay focused, resilient, and aligned with your body’s natural cycles.

How soon will I notice a difference?

Many people feel the effects of the Sky Portal Mini immediately - especially in terms of energy, alertness, and mood. OPN4 (melanopsin) stimulation can begin shifting your circadian rhythm within the first few sessions, helping you feel more awake during the day and more naturally ready for sleep at night.

For those using it to combat seasonal dips in mood or focus, consistent daily use for 1–2 weeks is often enough to notice a significant lift. Longer-term benefits, like improved sleep quality and steadier daytime energy, build as your body adapts to a healthier light environment. The key is consistency - your biology responds best when it receives the right light cues every day.

Sky Portal Mini User Manual

Download the User Manual

See How The Sky Portal Mini Works

The future of focus and rest now lives in your backpack from sunrise to sleep.

THE CHROMA DIFFERENCE

72%

Of members feel more productive while traveling or working indoors while using the Sky Portal Mini.

78%

Of members noticed an improvement in sleep quality after using the Sky Portal Mini on Amber Mode in the evenings.

74%

Of members have recommended the Sky Portal Mini to a friend or family member.

*Based on a survey including n=32 current Chroma customers evaluating self-percieved efficacy.

Benefits Your Cells 
Recognize.

Benefits Your Cells Recognize.

Engineered with wavelengths that support:

Daytime Focus

Stimulates OPN4 with balanced cyan light to support alertness and cognitive clarity*

Bright, circadian-aligned light output promotes sustained concentration through long work sessions*

Reduces mental fatigue by eliminating harsh, eye-straining blue light spikes common in office lighting*

Mood Elevation

OPN3 and OPN4 stimulation has been extensively studies to help regulate neurotransmitter activity linked to motivation and optimism*

High melanopic lux output mimics the mood-boosting effects of sunlight during shorter winter days*

Creates a more inviting, uplifting workspace with zero flicker natural-feeling light*

Screen Fatigue Relief

The addition of the Sky Portal Mini spectrum to a space replaces harmful dark blue light with beneficial cyan and violet for visual comfort*

Reduces eye strain, even during extended screen exposure*

Winter Wellness

Maintain strong daytime light cues for circadian stability during low-light months*

Simulates the spectral qualities of sunlight to help offset extended indoor time*

The bright, zero-flicker output helps keep energy and mood more stable throughout the winter season*

Evening Wind-Down

Gradually shift to Deep Amber and boosted 660nm Red to aid in melatonin production ensuring a deeper, more restful night.

Reduces circadian disruption from artificial lighting in the hours before bed*

Sleep Support

Supports a natural sleep cycle by reinforcing strong day/night light exposure patterns*

Helps you wake more refreshed by aligning internal rhythms with natural light timing*

Stimulates OPN4 with balanced cyan light to support alertness and cognitive clarity*

Bright, circadian-aligned light output promotes sustained concentration through long work sessions*

Reduces mental fatigue by eliminating harsh, eye-straining blue light spikes common in office lighting*

OPN3 and OPN4 stimulation has been extensively studies to help regulate neurotransmitter activity linked to motivation and optimism*

High melanopic lux output mimics the mood-boosting effects of sunlight during shorter winter days*

Creates a more inviting, uplifting workspace with zero flicker natural-feeling light*

The addition of the Sky Portal Minispectrum to a space replaces harmful dark blue light with beneficial cyan and violet for visual comfort*

Reduces eye strain, even during extended screen exposure*

Maintain strong daytime light cues for circadian stability during low-light months*

Simulates the spectral qualities of sunlight to help offset extended indoor time*

The bright, zero-flicker output helps keep energy and mood more stable throughout the winter season*

Gradually shift to Deep Amber and boosted 660nm Red to aid in melatonin production ensuring a deeper, more restful night.

Reduces circadian disruption from artificial lighting in the hours before bed*

Supports a natural sleep cycle by reinforcing strong day/night light exposure patterns*

Helps you wake more refreshed by aligning internal rhythms with natural light timing*

Built for Performance. Proven by Results.

Built for Performance.
Proven by Results.

The Chroma Sky Portal Mini has already transformed daily life for hundreds of travelers, digital nomads, and light enthusiasts.

Precision Engineering

The Chroma Sky Portal Mini is a travel-ready circadian light designed to optimize your biology anywhere life takes you. It delivers high-output, opsin-targeted light in a compact, ultra-portable form, pairing all-day circadian alignment with the freedom to throw it in a backpack and go.

Its custom White channel is built for stimulation without strain, removing the 430–460nm blue hazard while boosting the beneficial violet and sky blue wavelengths that activate OPN3, OPN4, and OPN5. The Deep Amber channel delivers a low-melanopic, warm 1300K glow with boosted 660nm Deep Red helps you wind down at night without disrupting melatonin production. Adjustable ratios let you blend the channels for the exact effect your biology is looking for.

A true flicker-free design ensures smooth, constant output at any brightness, protecting visual comfort and nervous system stability. The integrated 8,000mAh battery powers over 2 hours of full-intensity light and doubles as a portable power bank for your other devices.

Whether you’re working in a dim hotel room, catching a red-eye flight, or setting up a mobile workspace in a café, the Sky Portal Mini ensures your light environment is always as refined and biologically aligned as your lifestyle demands.

// Light Profile

Violet + Cyan Boosted White
660nm Boosted Deep Amber

50%
50%

// Component Lifespans

LEDS

BATTERY

50,000 hrs
900+ cycles

The Sky Portal Mini Spectrum

The Sky Portal Mini delivers a precise blend of circadian-aligned white light by day and deep amber with boosted 660 nm red by night. Its spectrum stimulates OPN3, OPN4, and OPN5 to enhance focus, mood, and biological alignment from sunrise to bedtime.

slider01_3350x_dfa9cdf1-bc04-438f-87d5-908a275cb9b0

Sky Portal Mini - Daytime

slider02_3000x_16f1f1fb-2d1e-4067-893b-2876b539401b

Sky Portal Mini - Night

NOTE: Reading taken at 8" from device. These spectrum graphs of the Sky Portal Mini are logarithmic on the y axis.

Outshining the Competition

While the lighting industry has zero understanding of human biology, we created the closest thing to natural sunlight for your indoor life.

Mini

SAD Lamps

Std. Lights

Indoor Lighting

Conventional Lighting

Over 10,000 melanopic lux

🟢

🔴

Total Opsin Coverage (OPN3, OPN4, OPN5)

🟢

🔴

Harsh dark blue light reduction (430–450 nm)

🟢

🔴

Day-to-Night transition capabilities

🟢

🔴

Wavelengths for seasonal support

🟢

🔴

Broad wavelength spread for wider benefit range

🟢

🔴

Absolutely flicker free

🟢

🔴

Backed by a 5-year warranty

🟢

Rarely

🟢

Frequently Asked Questions

How do I use my Sky Portal Mini?

After dark, DO NOT use the highly stimulating white channel, instead set the device to 100% Deep Amber and dim to a level that is comfortable.

It also doubles as a portable power bank to keep your other devices charged on the go.

How long will it take to see results?

Can I use the Sky Portal Mini at night?

Yes, but ONLY use the device set to 100% Deep Amber as the white channel is highly stimulating and will disrupt sleep if used after dark.

Why would I choose the Sky Portal Mini over the Sky Portal 2.1?

The Sky Portal Mini is made for travel, flexibility, and tight spaces. It gives you the same powerful circadian-supporting light as the full-size Sky Portal 2.1, but in a compact, portable form you can take anywhere. Use it in hotel rooms, at your desk, in your kitchen—anywhere you need better light but can’t set up a full rig. If you want full-room immersion at home, go with the 2.1, but if you need something to keep you aligned on the go, the Mini is the clear choice.

Why does Opsin simulating light promote a natural circadian rhythm?

Cyan to Violet wavelengths of light stimulate opsin containing cells, which act as the main wakefulness/sleepiness controllers. These are the key wavelengths and photoreceptor pathways that when stimulated, promote alertness and circadian rhythm regularity. (Study)

The Sky Portal uniquely promotes circadian and mental health through opsin stimulation balanced with deep red light.

Is this just a high powered SAD lamp?

The Sky Portal Mini is far more than a S.A.D. light. It is a portal connecting the interior of a building to a natural outdoor setting.

The idea that S.A.D. is a condition that only affects a small segment of the population is misleading. Nearly all people feel and perform worse in poor light environments where their circadian rhythm is disrupted, we only give it a special name when these normal reactions cross a somewhat arbitrary threshold. Better light leads to a better life. We've custom tuned the white LEDs in this device to have no cyan gap and offer excellent opsin stimulation, we then balanced that stimulating white with a powerful and relaxing Deep Amber channel.

What is the guarantee on the Sky Portal Mini?

We are confident that your experience with the Sky Portal Mini will be nothing short of extraordinary. However, we understand that personal preferences may vary, and we want you to have complete peace of mind when you choose us as your trusted light solution

provider.

With our 100-day Satisfaction Guarantee, you can embark on your journey to enhanced well-being without hesitation. If, within the first few weeks of using your Sky Portal Mini, you find that it doesn't align with your expectations or preferences, you have the option to return it to us. We stand behind the quality and effectiveness of our product, and we will provide you with a full refund.

How long will it take to get my order?

It depends on where you are. Orders processed here will take 5-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details will be provided in your confirmation email.

Can I use my Sky Portal worldwide?

Yes! The Sky Portal Mini is compatible with both 110/120V and 220/240V (adapter not included).

Can I take the Sky Portal Mini on a plane?

Yes. The Sky Portal Mini is safe to bring on a plane, but make sure to pack it in your carry-on, not your checked luggage. Since it contains a built-in battery (and doubles as a power bank), it needs to stay with you during the flight. Just toss it in your bag and enjoy better light wherever you land.

Side note: It is also fantastic for jet lag so you'll want access to it at all times either way.

Is there support if I have questions?

Yes. Our team is always here for you. Whether it's setup help, usage tips, or deeper questions about red light therapy, we’re ready to support your recovery goals.

Simply contact us at hello@getchroma.co and we will respond within 24 hours.

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