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Vielight Neuro Duo 4: Refurbished

Vielight Neuro Duo 4: Refurbished

2.039,15 €
2.399,00 € 2.039,15 €
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The Neuro Duo 4 features 5 Vie-LED modules that emit pulsed near-infrared light at 810 nm at 10 Hz (alpha mode) and 40 Hz (gamma mode) – without generating heat. These frequencies are associated with alpha and gamma brainwave activity, respectively, in scientific literature.

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The Neuro Duo 4 features 5 Vie-LED modules that emit pulsed near-infrared light at 810 nm at 10 Hz (Alpha mode) and 40 Hz (Gamma mode) – without generating heat. These frequencies are associated with alpha and gamma brainwave activity in scientific literature.
Although near-infrared light is largely invisible, our design achieves one of the highest power densities in the industry (~300 mW/cm² irradiance, 1000 mW per transcranial LED, 5000-6000 mW total), based on an independent laboratory test report.

The Neuro Duo 4 offers both Alpha and Gamma modes:

  • The Alpha mode operates at 10 Hz and is often associated in literature with a relaxed state of mind.

  • The Gamma mode operates at 40 Hz and is often associated with concentration and attention processes in scientific publications.

  • The Vielight Neuro uses patented intranasal photobiomodulation technology, which transmits near-infrared light energy to the underside of the brain via the nose.

  • The olfactory bulb is anatomically connected to brain regions associated with memory functions in the literature.

  • The ventromedial prefrontal cortex is described in scientific papers as relevant for cognitive processes.

In this sense, an innovative system to support:
Relaxation · Concentration · Memory · Well-being

Note: A modern light system to support general well-being and promote a relaxed, balanced everyday feeling. This product is not a medical device. It is not intended for medical diagnosis, treatment, cure, or prevention of any disease. Its use is solely for well-being and within a lifestyle/wellness context.

Our products come with a 24-month warranty.

Beware of counterfeit or imitation Vielight devices offered online – they are illegal.

Original devices bear the "Vielight" logo.

If you are unsure whether a device is genuine or comes from an authorized source, please contact us.

  • We are an authorized global reseller of Vielight.
  • Refunds must be requested through the respective point of sale.
  • We offer an 80% refund within 6 months of the purchase date if our devices do not help you. This applies only to direct purchases from Neurofeedback Partner GmbH.
  • If you order online from outside the EU, please expect additional costs such as import duties, taxes, and courier fees. These are often overlooked and can increase the total price.
  • Intranasal applicators purchased separately are not refundable.
  • No warranty for devices sold via Amazon, eBay, or similar marketplaces – these could be stolen or counterfeit.
  • Note: If the device is used beyond the usual inspection within the 14-day withdrawal period (e.g., through intensive use or use of components with body contact such as the nasal part), we reserve the right to make a partial refund (e.g., 80% of the purchase price) due to the resulting loss of value, as the device can no longer be sold as new.
  • 1x Neuro Duo Headset
  • 1x Neuro-intranasal Applicator
  • 1x charger
  • 1x equipment bag
  • 1x silicone case
  • 1x transport bag
  • 1x Intenso Powerbank XS10000 (free, from Neurofeedback-Partner)

Core functions

The Neuro Duo 4 offers access to both Alpha (10 Hz) and Gamma (40 Hz) pulse rates.

Users can switch between the two modes based on individual needs and application goals.

- In Gamma mode, near-infrared light pulses at 40 Hz, which can modulate neuronal networks in the gamma frequency range.
This mode is typically used in conjunction with increased cognitive activity and periods of concentration.
- In Alpha mode, near-infrared light pulses at 10 Hz, which can affect the brain's alpha frequencies. This mode is often associated with states of rest, mindfulness, relaxation, and learning processes. With the Neuro Duo 4, you can switch between both modes according to personal preference. For users who only wish to utilize one frequency, the individual devices Neuro Gamma and Neuro Alpha are available.


The Vielight Neuro Duo 4 also features patented
intranasal photobiomodulation technology. This enables the delivery of near-infrared light to the underside of the brain via the nose.

The olfactory bulb is directly connected to brain regions that play a role in maintaining long-term memory. The ventromedial prefrontal cortex is involved in important cognitive processes.

Medical approval

The Vielight Neuro Duo 4 is not a medical device as defined by the EU Medical Device Regulation (MDR). It is a photobiomodulation system for use in professional coaching and to support personal training processes. It is also suitable for non-medical studies using near-infrared light.

Its modular design with 5 Vie-LEDs enables targeted light application to selected brain networks – with the safety of LEDs.

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

Contraindications: We do not recommend the use of our devices if you have an active brain hemorrhage or a history of epileptic seizures. Pregnant women should consult their doctor 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 once the body has adjusted to the application.

If you have any further questions, please feel free to contact us.

Recommended application

Here is the quick start guide for the Neuro Duo 4.

The manufacturer recommends taking the medication every other day initially, before considering more frequent use, which should not exceed once a day. For more severe cognitive impairment, once-daily use six days a week is recommended. Please note that these recommendations are based on theoretical assumptions, anecdotal reports, and published and ongoing clinical trials.

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