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4.8/5 Rating | +100,000 devices sold worldwide

Vielight Neuro Duo 4 + Vagus

$3,098

When used sequentially, the Neuro Duo 4 and the Vagus create a powerful photobiomodulation system that stimulates both the brain and vagal nerve. This enhances brain and systemic performance while improving brain-body connectivity.

Gain 6 months of partial access to Vielight-AI for free when you purchase a Vielight Neuro 4 + Vagus bundle.

We recommend using the Vielight Neuro first, followed by the Vielight Vagus.

Vielight Neuro Duo 4

Delivering the strongest LED irradiance globally, the Vielight Neuro utilizes 810nm Vie-LED technology to focus on critical brain networks with full-transcranial coverage.

Our patented intranasal-transcranial (itPBM) approach reaches deep brain regions that transcranial-only devices cannot, providing the most complete brain coverage.

810nm outperforms 1064nm / 1070nm for deeper brain reach in head-to-head tPBM comparison studies by Harvard and leading universities.

The Vielight Neuro Duo modulates neural alpha and gamma waves, leading to enhanced cognition, memory, brain resilience and calmness.

Gain 6 months of partial access to Vielight-AI for free when you purchase a Vielight Neuro 4.

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Vielight Vagus

The Vielight Vagus enables non-invasive vagus nerve stimulation via photobiomodulation.

The Vagus is engineered to enhance brain-body connectivity and improve the brain-gut connection.

Vagus nerve stimulation also promotes healthy HRV and stress relief, leading to enhanced mental and physiological recovery.

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Medical grade technology

Used by everyday people, researchers and elite athletes

2 - year warranty
and 6-month return policy

Additional information

Vielight Neuro Duo 4

Manufacturer

Vielight Inc

LED Power

1000 mW per module

Power Density | Irradiance

100-150 mW/cm² (3) : Rear Transcranial LEDs
75-125 mW/cm² (1) : Frontal Transcranial LED
25-50 mW/cm² (1) : Intranasal LED
(Potential 300 mW/cm² but safety-limited)

Est. Irradiance Area

400cm² (+/- 50cm²) including Intranasal module footprint

Targeted Brain Network

Default Mode Network
Modules are adjustable to target different areas

Head Size Suitability

Minimum age: 5 years old based on published study data

Medical Grade Certification

ISO13485 and MDSAP

Safety Certification

TÜV Rheinland

Warranty

24 months

Satisfaction Guarantee

We have an 80% refund policy, valid for 6 months from the time of purchase

Vielight Vagus

Manufacturer

Vielight Inc

LED Power

500 mW per module

Power Density | Irradiance

50 mW/cm² (2) : Bilateral LEDs
25 mW/cm² (1) : Intranasal LED
(Potential 300 mW/cm² but safety-limited)

Est. Irradiance Area

400cm² (+/- 50cm²) including Intranasal module footprint

Medical Grade Certification

ISO13485 and MDSAP

Safety Certification

TÜV Rheinland

Warranty

24 months

Satisfaction Guarantee

We have an 80% refund policy, valid for 6 months from the time of purchase

Overview and benefits

Focus

Stress

Memory

Sleep quality

Mental clarity

Brain energy

Creativity

Immunity

Systemic fitness

The Neuro Duo 4 helps you improve your cognition, memory and functional connectivity. Its Alpha mode induces a more relaxed mental state while its Gamma mode induces a more focused mental state.

The Vagus was engineered to enhance brain-body connectivity and improve the brain-gut connection. Vagus nerve stimulation also promotes healthy HRV and stress relief.

Using both devices together helps you with:

20 minutes per session

Results in 4 to 8 weeks

Adjustable and comfortable

The Neuro offers a nasal gateway to the brain

The Vielight Neuro also offers patented intranasal photobiomodulation technology.


This is the best way to deliver near-infrared energy through the nose to the underside of the brain.

The olfactory bulb is directly connected to the brain regions responsible for keeping long-term memories.

The ventromedial prefrontal cortex is vital for cognitive processes.

Vagus

Mental clarity
Stress
Memory
Focus
Systemic fitness

The Vielight Vagus enables non-invasive vagus nerve stimulation via photobiomodulation.

 

The Vagus was engineered to enhance brain-body connectivity and improve the brain-gut connection.

 

Vagus nerve stimulation also promotes healthy HRV and stress relief, leading to enhanced mental and physiological recovery.

The intranasal pathway: The Vielight advantage

A study conducted at Baycrest Hospital in collaboration with the University of Toronto shines a light on the advantages of adding intranasal stimulation to transcranial PBM, an approach unique to Vielight’s devices (itPBM™).

Reaches both surface and deep brain regions.

Targets lower parts of the brain involved in memory, emotion, and cognition, inaccessible through the scalp.

Stimulates the glymphatic system, related to brain’s metabolic cleansing.

Covers the whole brain Covers the whole brain

Bypasses hair and skin Bypasses hair and skin

Concave Vie-LED lenses part hair for direct scalp contact. Intranasal light delivery isn’t affected by skin tone. Light reaches the brain cleanly both ways.

 Industry-leading irradiance Industry-leading irradiance

Vie-LEDs deliver industry-leading irradiance that penetrates the skin and skull. The dual approach (transcranial + intranasal) activates the whole brain in ~5 minutes.

Modular and adjustable Modular and adjustable

Flexible modules fit any head shape, avoid light scattering, and can be repositioned to target specific brain networks.

Standard tPBM

Covers only half the brain Covers only half the brain

Targets only the top of the brain, leaving bottom regions unstimulated. No deep brain access.

Hair and skin get in the way Hair and skin get in the way

LEDs rest on hair, preventing scalp contact as hair scatters light. Transcranial energy delivery is also affected by skin tone, which absorbs some of the light.

Poor irradiance and penetration Poor irradiance and penetration

Weak LEDs produce too little irradiance, so most light fades before reaching the brain. Without an intranasal pathway, even less energy is delivered.

Rigid one-size shape Rigid one-size shape

Loose contact lets light fade before it reaches the brain. Fixed LEDs mean every session is generic, with no way to target different brain networks.

How it works

1. Full Transcranial Coverage via High Irradiance

The Neuro 4 utilizes five strategically placed Vie-LED modules and achieves comprehensive, full transcranial coverage. This is made possible by our industry-leading irradiance and the natural scattering of light through biological tissue. The high-powered 810nm photons “bathe” the wider cortex, ensuring no area of the upper brain is left unstimulated.

2. Deep Brain Reach: The Intranasal Synergy

To go beyond the cortex, the Neuro 4 includes a specialized intranasal module. This enables light energy to bypass the thick skull via the nasal cribriform plate, reaching deep ventral structures (like the hippocampus and hypothalamus). This “top-bottom” synergy provides an unbeatable, comprehensive brain energy footprint.

3. Targeted Default Mode Network (DMN) Geometry

While full-transcranial, the device’s energy geometry is precision-engineered to focus on the Default Mode Network (DMN)—the brain’s central command system. By concentrating our patented Vie-LEDs on DMN nodes, the Neuro 4 optimizes neural connectivity and metabolic health where it matters most.

4. The 810nm Advantage: Superior Penetration

The Neuro 4 utilizes the 810nm wavelength because it outperforms 1064nm and 1070nm for deeper brain reach. Head-to-head tPBM comparison studies by Harvard Medical School and other leading universities confirm that 810nm provides the strongest tissue penetration and mitochondrial interaction, making it the gold standard for brain photobiomodulation.

5. Dual-Frequency Neural Modulation

The Neuro 4 offers two evidence-based pulsed modes to guide brain state:

  • 10 Hz (Alpha): For relaxation, neural synchronization, and recovery.

  • 40 Hz (Gamma): For cognitive processing, memory enhancement, and focus.

6. Industry-Leading Power (No Heat)

Our patented Vie-LEDs produce the highest amount of power in the industry (~300 mW/cm² irradiance; 5000-6000 mW total) to ensure effective dosimetry. Despite this high output, the technology is engineered to remain “cold,” stimulating cells without generating any thermal discomfort. [See 3rd party testing report].

7. Featured in the Most Published Studies

The Vielight Neuro is featured in the most published brain PBM studies globally – a strong sign of its efficacy.

The Vielight Vagus combines bilateral neck modules designed to engage the vagus nerve from both sides and an intranasal applicator. The device features a resilient, flexible steel band that self-adjusts to various neck sizes, ensuring a secure and consistent fit for every user.

See Neuro Duo 4 See Vagus

What’s in the box

The Neuro Duo 4 comes with:

  • 1 Neuro headset
  • 1 Neuro intranasal applicator
  • 1 charger
  • 1 device pouch
  • 1 carry case

The Vagus comes with:

  • 2 bilateral neck modules
  • 1 intranasal applicator
  • 1 flexible steel band
  • 1 charger

Specifications

Neuro Duo 4

Manufacturer Vielight Inc
LED Power 1000 mW per module (max potential)
Power Density | Irradiance Transcranial LEDs: ~300 mW/cm2
Intranasal LED: ~25-50 mW/cm2
Total Power ~5000 mW (max potential)
Est. Irradiance Area 400cm2 (+/- 50cm2) including intranasal module footprint
Targeted Brain Network Full transcranial coverage with a focus on the Default Mode Network
Head Size Suitability Minimum age: 5 years old based on published study data
Medical Grade Certification ISO13485 and MDSAP
Safety Certification TÜV Rheinland

 

See info sheet         See research

 


Vagus

Manufacturer Vielight Inc
LED Power 500 mW per module
Power Density | Irradiance 50 mW/cm2 (2): Bilateral LEDs
25 mW/cm2 (1): Intranasal LED
(Potential 300 mW/cm2 but safety-limited)
Est. Irradiance Area 400cm2 (+/- 50cm2) including intranasal module footprint
Medical Grade Certification ISO13485 and MDSAP
Safety Certification TÜV Rheinland

 

See user guide See info sheet See research

Free Vielight Masterclass

Watch the free Vielight Masterclass series here: Link
More material will be added over time.

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Vielight Neuro

Why itPBM is Next-Gen

Watch the video
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Neuro 4

Real Human Skull Demonstration

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The Vielight Neuro Explained

Inventor and Research Scientists

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Excellent

4.7/5 Rating based on 445 reviews by everyday people and professionals

Filter by benefit:

Amanda Liang

Jan 19, 2024

Positive improvement after using Vielight...

I ordered Vielight Gamma for my sister. Her vision improve, she said it's clearer and easier to focus. Her walking has also improved, she can turn and...

Matt O'Connor

May 06, 2024

As a survivor and pro...

As a professional athlete I knew I had to get my hands on a neuro 4 duo and help my brain in more ways than just functional...

Hana Sung

Jan 03, 2024

I absolutely love my Neuro...

I absolutely love my Neuro 4 and Vagus devices. I didn't want to pay for shipping, so Vielight accommodated my request to pick it up from their...

Quin Lee Jeffery

Oct 01, 2023

Our best selves

The Vielight Neuro Duo is part of my life now. I can feel the difference when I do not use it for several days. Being a busy...

YUN MEI TAO

Jan 08, 2024

Immunity boost

I used the Vielight Vagus and it improved a lot.

Craig G

Oct 24, 2023

My experience with the Neuro...

My experience with the Neuro Dua (Alpha/Gamma) has been nothing short of transformative. I used it everyday for the default 20 minute session. It took a good...

Linda Ulrich

Dec 06, 2024

These products are very helpful...

My husband and I have been very impressed with our Vielights. We have both Neuro Duo and Vielight Vagus. We have both noticed a significant improvement in...

Candace

Sep 28, 2023

Amazing customer service

Amazing customer service! They couldn't be more helpful and kind! My husband just started using the Neuro Duo device. I needed some help and guidance in using...

Feel better with the Neuro Duo 4

We have over 25 published and ongoing clinical trials with Vielight technology. The Neuro has been used in research such as:

Alzheimer’s disease (Dementia)

Parkinson’s disease

PTSD

Traumatic brain injury

Autism

Cognitive creativity

Neuromodulation

Cellular enhancement

See research

What are the Neuro’s Alpha and Gamma modes?

The Neuro Duo 4 grants access to both the Alpha and Gamma pulse rates.

The Gamma mode pulses near-infrared light energy at 40 Hz, which has a neuromodulating effect on Gamma brain waves. This increases focus, information processing, memory, and brain energy levels.

The Alpha mode pulses near-infrared light energy at 10 Hz, which has a neuromodulating effect on Alpha brain waves. This has effects on the brain’s resting state, offering support for mindfulness, learning, relaxation, and sleep improvement.

How often should I use the Neuro Duo 4 and the Vagus together?

Our general recommendation is to use both devices once a day, 6 days a week. They are timed for 20 minutes per session.

When it comes to the Neuro Duo 4, we recommend alternating between Alpha and Gamma modes. The Gamma mode is best used in the morning or early afternoon. The Alpha mode is ideal for nighttime and just before going to bed.

If you have any additional questions about usage, you can get a free consultation with our experts.

Are there any contraindications or side effects?

Vielight products are safe and well-tolerated by most users. However, there are some contraindications and potential side effects to be aware of:

Contraindications:
We don’t recommend using our devices if you have active brain bleeds or a history of seizures. Pregnant women should also consult with their healthcare provider before using photobiomodulation devices.

Side effects:
Some users may experience mild and temporary side effects, such as headaches, dizziness, or slight discomfort at the application site. These usually subside as the body adjusts to the therapy.

If you have any additional questions, feel free to reach out to us!

What is Vielight-AI?

The Vielight-AI Platform utilizes artificial intelligence (AI) and machine learning (ML) models to analyze EEG files with breakthrough precision and speed.

Whether you are a researcher, a clinician, or a home user, analyze your EEG data to learn how your brain reacts to brain photobiomodulation on the Vielight-AI platform.

A soft launch is planned for early 2026.

Please note: To obtain EEG data, you will require an EEG acquistion device, such as Muse, Brainbit, Emotiv, Brainmaster etc.

Vielight Neuro Duo 4 + Vagus

$3,098 HSA/FSA Eligible
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