Two red light wearables that wrap around the neck. One puts all of its light there.
ThyRed ($429) is a neck collar with 27 LEDs, all on the neck, at 630, 660 and 830 nm, powered by USB-C. The Bon Charge Neck and Chest Mask ($349) covers the neck and the chest with 630 and 850 nm light and runs on a rechargeable battery. Below is every published spec, including the three places where Bon Charge wins.
Updated 13 November 2026. Every Bon Charge figure comes from Bon Charge's own product page and user manual. Sources are listed at the end.
ThyRed: peak directly over one LED, measured at the skin through the 1 mm silicone, at a single intensity setting. Bon Charge: the one figure on its product page, with no distance, setting or wavelength stated. The two brands do not publish under the same conditions.
ThyRed draws about 5 W, measured at the wall, and all 27 LEDs sit on the neck. Bon Charge does not publish its wattage. 47 of its 120 light points sit on the neck band, counted by ThyRed from Bon Charge's own product photos, so 39% of its power reaches the neck if every light point is driven alike.
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 |
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|---|---|---|
| ThyRed | Bon Charge Neck and Chest Mask |
|
| Near-infrared output | 53 mW/cm²830 nm | Not published |
| Red output | 210 mW/cm² at 660 nm 146 mW/cm² at 630 nm | Not published |
| Overall figure | up to ~210 mW/cm²peak over one LED, at the skin | 34.2 mW/cm²distance and setting not stated |
| Wavelengths | 630 · 660 · 830 nm | 630 · 850 nm |
| LEDs | 27 ceramic 3535 power LEDsone wavelength per LED | 120 light points, two chips eachour count from the product photos · sold as 242 LEDs |
| Light on the neck | 27 of 27 LEDs | 47 of 120 light pointsthe rest sit on the stem and chest flap |
| Total power | about 5 Wmeasured at the wall · all of it on the neck | Not publishedshared between neck, stem and chest |
| Power source | USB-C wall plug or power bankno built-in battery | Rechargeable batterynot to be worn while charging, per the user manual |
| Weight | 80 g on the skin | 320 gper the user manual |
| EMF | ≤3 mGlab tested to EN 62233 | “0 mG”no test report published |
| Eye safety rating | EN 62471 Exempt Group | Not published |
| Intensity levels | 4 | 3 |
| Session timer | 15 · 30 · 60 min | 10 to 30 min |
| Covers the chest | No | Yes |
| Cordless in use | Yes, with a power bankpower bank not included | Yesbattery built in |
| Price | $429 | $349US store, November 2026 |
| Warranty | 1 year · 30 day returns | 1 year · 30 day returns |
Stronger published figure. The mark appears on both sides.
Bon Charge figures come from boncharge.com and the Bon Charge user manual, read on 12 November 2026. Light points counted by ThyRed from Bon Charge's own product photos.
ThyRed was designed with a battery. We took it out.
Rechargeable batteries fade with every charge. When one is sealed inside a device, a worn battery usually means a replacement unit that has to be built, boxed and shipped to you, while the old one goes to battery recycling.
We would rather build something you keep. So there is no battery inside to wear out or throw away, and you power ThyRed with what you already own.
ThyRed is a neck collar with 27 LEDs, all of them on the neck, at 630, 660 and 830 nm. The Bon Charge mask covers the neck and the chest with 630 and 850 nm light. By our count from Bon Charge's product photos, 47 of its 120 light points sit on the neck band.
ThyRed publishes peaks of 210 mW/cm² at 660 nm, 146 mW/cm² at 630 nm and 53 mW/cm² at 830 nm, measured at the skin directly over one LED. Bon Charge publishes one figure, 34.2 mW/cm², with no distance, setting or wavelength stated. The two figures are not measured under the same conditions.
No. ThyRed lights the neck only. If you want the chest covered as well, the Bon Charge mask does that.
The Bon Charge mask is $349 in its US store as of November 2026. ThyRed is $429.
Rechargeable batteries fade with every charge. ThyRed has no battery inside, so there is none to wear out or throw away. It runs from the USB-C wall plug in the box or from any USB-C PD power bank.
ThyRed is a general wellness device and is not intended to diagnose, treat, cure, or prevent any disease. Bon Charge describes its mask as a general-use beauty product.
ThyRed is a general wellness device. It is not intended to diagnose, treat, cure, or prevent any disease. Bon Charge is a trademark of its owner. ThyRed is not affiliated with Bon Charge. Competitor information is drawn from Bon Charge's publicly available materials and is provided for honest comparison. We checked every figure on the date shown above, but figures on this page may contain errors, and all information here, including prices and specifications, can change at any time. Please check each maker's own website before you buy. If you spot a mistake, write to hello@thyred.com and we will correct it.