MEINNO Duo — 670 nm Red + 480 nm Blue Light Therapy Glasses MEINNO Duo runs two light modes in one frame. Red light at 670 nm for your daily eye-care routine, and a 480 nm blue light mode for the mornings when daylight is in short supply. One button switches between them. Two modes, two routines Red Mode — 670 nm. The deep red wavelength used in red light research on the eye. No UV, no infrared heat, no lenses in the way. Blue Mode — 480 nm. Daylight-style blue for the darker months and early starts — the same wavelength used in MEINNO Dawn, worn instead of sat in front of. Built to be worn, not sat in front of Open frame with no lenses — fits over prescription and reading glasses Sits just above the eyebrows, so your field of view stays clear Soft silicone arms fold flat for a case that fits in a pocket Adjustable sport strap included for a firmer fit USB-C rechargeable — no base station, no cables during use Specifications Model: MEINNO Duo Light modes: Red (670 nm) / Blue (480 nm) Intensity: Red output slightly lower than MEINNO Red Session timer: Built-in, with automatic shut-off UV output: None Safety certification: IEC 62471:2006, non-hazardous Weight: 1.8 oz / 50 g Frame: Open frame, no lenses — fits over prescription and reading glasses Arms: Soft silicone, fold flat Power: USB-C rechargeable In the box: Glasses, zip travel case, USB-C cable, spare nose bridge, adjustable sport strap, user manual How to use Charge with the included USB-C cable. Wear it so the frame sits just above your eyebrows and the nose bridge rests on your nose. Press once for red mode, again for blue mode. Keep your eyes open and relaxed, looking straight ahead. The device switches off automatically when the session ends. Frequently asked questions Which model should I choose? Choose MEINNO Duo if you want both red and blue light in one device. Choose MEINNO Red if you only want red light and prefer the higher red intensity. Choose MEINNO Dawn if you only want daylight and 480 nm blue for sleep, energy and winter. Can I use both modes on the same day? Yes. They are separate sessions — many people use blue in the morning and red later in the day. Is 480 nm blue light safe for my eyes? The blue light people worry about sits around 415–455 nm. MEINNO Duo's blue mode is centred on 480 nm, is completely UV-free, and is tested to IEC 62471 with a non-hazardous classification. Can I wear it over my glasses? Yes. The frame is open with no lenses, so it fits over prescription and reading glasses. Contact lenses are no problem either — nothing touches your eyes. About MEINNO MEINNO has been developing light therapy eyewear since 2018. Our current models are second-generation designs, with spectral output calibrated against laboratory measurement. Shipped from the United States, 1–2 business days to dispatch and 3–7 business days to deliver. 90-day returns — free within the first 30 days. MEINNO Duo is a general wellness product. It is not intended to diagnose, treat, cure or prevent any disease, and it does not replace an eye examination or any treatment prescribed by your doctor. If you have an eye condition, take photosensitising medication, or are unsure whether light therapy is right for you, speak to your doctor first.
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