By Ron Brown
PBM design engineer
Updated May 2026
How does the Coronet compare to other devices?
The Well Red Duo Coronet uses more powerful LEDs and therefore has greater penetration into brain tissue.
It uses the wavelengths 670nm and 810nm.
Scientific tests prove that 670nm is the most effective wavelength at stimulating mitochondria and 810nm penetrates furthest into human tissue.
Many other devices use different, less effective red light wavelengths such as 630nm or 660nm and 850nm, 940nm or 1050nm, which do not reach as deeply into the brain.
This chart shows that light at 810nm penetrates deepest into the brain and other tissue. It can be seen that NIR light of 940nm is blocked by tissue and only penetrates a few millimetres.
The Well Red Coronet uses the 810nm wavelength.
The evidence is that penetration is improved by having lights all over the head - there is an additive effect - the greater the light coverage, the deeper the penetration.
Comparison of near infra-red pulsing of
the Coronet, the Symbyx Neuro
and the Vielight Neuro.
The above video shows slow motion pulsing of the two wavelengths as follows.
From start: Near infra-red at 1/8th speed. The early model Vielight device is set at 10Hz.
From 0:29: The same devices, but at 1/80 speed. Notice the unconventional “Xmas tree” pattern of the Symbyx device, where five groups of 4 LEDs each are flashed on in a looping sequence 72° apart.
From 0:51: The Well Red Coronet and the Symbyx Neuro in red light mode at 1/8 speed. A similar switching pattern to the NIR mode can be seen.
From 1:06: The same at 1/80 speed. The Coronet has all 40 high power LEDs on for half the time and off for the other half. The Symbyx Neuro has a group of 4 LEDs on for 1/5 of the time, then subsequent groups on in succession for the same length of time each. At no time are all the LEDs on or off.
Measurement of red light waveform and intensity.
The Duo Coronet is being used in ongoing research.
Early results have shown that each of the Duo Coronet’s wavelengths penetrates well into the brain. We know that no other devices can achieve this degree of penetration because they simply don’t have the power or the correct wavelength.
The Duo Coronet uses the most effective wavelengths. Having two wavelengths in sequence, the visible red 670nm and the infrared 810nm has been shown to be more effective than either on their own or both shone together. 670mm has the best effect on mitochondrial function at-cell, and 810nm is almost as good at-cell but has the added benefit of being able to penetrate further into brain tissues.
670nm also has special qualities as it is the wavelength used by brain cells to communicate with each other. They are able to create and send 670nm pulses - called biophotons - to each other and this wavelength is associated with cell health. Using other wavelengths in the red spectrum is not as effective.
By stimulating all parts of the brain, with full transcranial light coverage using wavelengths that have the strongest cellular effect and best tissue penetration profile, ailing neural networks in the brain are reached and improved by the Duo Coronet. We believe that this is a big part of the Duo Coronet’s enhanced effect on a wide range of symptoms.
People who have used other devices and then moved to a Duo Coronet have found that they get further improvements.
And of course, there is the intranasal CoroNase with the same powerful LEDs as used in the Duo Coronet. This significantly increases the light coverage and light penetration over and under the brain.
Finally – and this is a clincher for many people – the Duo Coronet is the easiest and most comfortable to wear and use, and it doesn’t mess with your hairstyle.