Short answer
What is the difference between 830nm and 940nm red light therapy?
They are different near-infrared wavelengths that devices list. In these listings, 830nm appears in a face mask and a light panel, while 940nm appears in a wearable body mat. The devices also differ in form, LEDs and session controls.
830nm vs 940nm red light therapy comes down to which wavelength your device lists and what form it takes. The two 830nm devices here are a face mask and a light panel; the 940nm device is a wearable body mat. Pick the 830nm side for a mask or panel that lists 830nm, and the 940nm side for the mat that lists 940nm with a 2-year warranty.
This comparison covers the listed wavelengths, device forms, session controls and warranties, using the three listings as concrete examples. It does not compare health effects. Listings were collected 23 October 2026.
This article is informational and is not medical advice. Red light devices emit bright light; do not stare into the LEDs, use the included eye protection, and check with a clinician about any condition. See our Medical Disclaimer.
Chillveda earns a commission when you buy through links on this page, at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. Affiliate disclosure.
Quick picks
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1
Red Light Therapy for Body Chill Score 9.5/10Check price on AmazonA 360-LED wearable mat listing 660, 850 and 940nm, over 150mW/cm² irradiance and a 2-year warranty.
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2
myhalos Red Light Therapy For Face Chill Score 9.5/10Check price on AmazonA 360-LED face mask listing 4 wavelengths including 830nm, a 4000 mAh battery and a 1-year warranty.
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3
Clinical Grade Red Light Panel 120 LEDs Chill Score 9.4/10Check price on AmazonA 120-LED panel listing 5 wavelengths including 830nm, three light modes and included goggles.
A 360-LED wearable mat listing 660, 850 and 940nm, over 150mW/cm² irradiance and a 2-year warranty.
Pros & ConsViewHide
Pros
- Lists 940nm among 3 wavelengths
- 360 LEDs with over 150mW/cm² listed
- 2-year warranty, longest here
- 10-90 min timer with 5 brightness levels
Cons
- No 830nm wavelength listed
- Mat form; not a panel or mask
- 29.5 x 16.5 in needs body space
- No safety certification stated
A 360-LED face mask listing 4 wavelengths including 830nm, a 4000 mAh battery and a 1-year warranty.
Pros & ConsViewHide
Pros
- Lists 830nm among 4 wavelengths
- 360 high-powered LEDs listed
- 4000 mAh battery, 50 min per charge
- 1-year warranty with 24/7 support
Cons
- Face mask form; body use not listed
- No 940nm wavelength listed
- 10 minutes, 4 times weekly routine
- No safety certification stated
A 120-LED panel listing 5 wavelengths including 830nm, three light modes and included goggles.
Pros & ConsViewHide
Pros
- Lists 830nm among 5 wavelengths
- Three modes: red, NIR or combined
- Built-in cooling fans listed
- Goggles included for eye protection
Cons
- 120 LEDs, fewest here
- No warranty term stated
- 10.55 lb panel needs a set spot
- No 940nm wavelength listed
More to compare
Red Light Therapy for Face and NeckCheck price on Amazon
Red Light Therapy Mask for Face & NeckCheck price on Amazon
Red Light Therapy PanelCheck price on Amazon
Red Light TherapyCheck price on Amazon
Medisana 3D Red Light Therapy Mask for FaceCheck price on Amazon
VYM Infrared Light Therapy MaskCheck price on Amazon
830nm vs 940nm at a glance
| 830nm devices | 940nm device | |
|---|---|---|
| Listings here | myhalos mask, Makiuri panel | Arhoet mat |
| Wavelengths listed | 633, 830, 415, 1072nm (mask); 630, 660, 810, 830, 850nm (panel) | 660, 850, 940nm |
| Form | Face mask; light panel | Wearable body mat |
| LEDs listed | 360 (mask); 120 (panel) | 360 |
| Session control | 10 minutes, 4 times weekly (mask); 10 minutes (panel) | 10-90 min timer, 5 brightness levels |
| Warranty listed | 1 year (mask); not stated (panel) | 2 years |
The wavelengths each side lists
The 830nm side lists that wavelength in two devices: the myhalos mask lists 830nm among 4 wavelengths (633nm, 830nm, 415nm and 1072nm NIR), and the Makiuri panel lists 830nm among 5 wavelengths (630nm, 660nm, 810nm, 830nm and 850nm). The 940nm side is the Arhoet mat, which lists 940nm among 3 wavelengths (660nm, 850nm and 940nm).
Neither side lists a wavelength the other side also lists at the same number, except that the Makiuri panel and the Arhoet mat both list 660nm and 850nm. The 830nm figure describes the mask and panel only; the 940nm figure describes the mat only.
Device forms and session times
The forms decide where each device goes. The myhalos is a face mask with a 4000 mAh battery for up to 50 minutes per charge, used for 10 minutes 4 times weekly by the listing. The Makiuri is a 29.8 x 11 inch panel for face and body with three settings (red only, near-infrared only, or combined) and 10-minute sessions. The Arhoet is a wearable mat with a 29.5 x 16.5 inch coverage area, a 36 x 4 inch elastic strap, and a 10-90 minute timer with 5 brightness levels and 2 pulse modes (10Hz and 40Hz).
Power differs too: the mask runs on its rechargeable battery with a USB-C charger, the panel lists built-in cooling fans for long sessions, and the mat runs up to 35W with over 150mW/cm² irradiance by the listing.
Gear for each side
These are scored on the Chill Score: performance 30, build 20, value 20, safety certifications 15 and warranty 15. None states a safety certification, so all score 0 for safety. The Arhoet lists a 2-year warranty and the myhalos a 1-year warranty; the Makiuri states no warranty term.
| Product | Chill Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Arhoet Red Light Mat | 9.5 | 29 | 20 | 21 | 0 | 4 |
| myhalos Red Light Mask | 9.5 | 29 | 20 | 20 | 0 | 3 |
| Makiuri Light Panel | 9.4 | 28 | 20 | 20 | 0 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
Choose 830nm if
- You want a face mask that lists 830nm among 4 wavelengths.
- You want a panel with 5 wavelengths and three light modes.
- You prefer a battery-powered mask or a panel with cooling fans.
- Eye protection in the box matters; the panel includes goggles.
Choose 940nm if
- You want the wearable mat that lists 940nm.
- You want the longest listed warranty here, 2 years.
- You want a 10-90 minute timer with brightness and pulse modes.
- You want the highest listed irradiance, over 150mW/cm².
Common questions
What is the difference between 830nm and 940nm red light therapy?
They are different near-infrared wavelengths that devices list. In these listings, 830nm appears in a face mask and a light panel, while 940nm appears in a wearable body mat. The devices also differ in form, LEDs and session controls.
Which device lists the most wavelengths?
The Makiuri panel lists 5 wavelengths (630nm, 660nm, 810nm, 830nm and 850nm). The myhalos mask lists 4 and the Arhoet mat lists 3.
Do any of these list eye protection?
The Makiuri panel includes goggles for eye protection. The other two listings do not mention goggles. Do not stare into the LEDs on any of them.
Which has the longest listed warranty?
The Arhoet mat lists a 2-year warranty. The myhalos mask lists a 1-year warranty. The Makiuri panel states no warranty term.
Can I use these on my body?
The Makiuri panel is listed for face and body, and the Arhoet mat is a wearable body mat with a 29.5 x 16.5 inch coverage area. The myhalos is a face mask. Check each listing for the intended use.
Back to all red light therapy reviews.
