Short answer
What is the difference between 830nm and 850nm red light therapy?
They are different near-infrared wavelengths that devices list. In these listings, 830nm appears in two face masks, while 850nm appears in a face-and-neck mask and a light panel. The devices also differ in LEDs, session controls and warranties.
830nm vs 850nm red light therapy comes down to which wavelength your device lists and what form it takes. The two 830nm devices here are Medisana face masks with 3 light modes; the 850nm side is a YOEYOU face-and-neck mask and a TroupePal light panel. Pick the 830nm side for the mask with three timed modes, and the 850nm side for the panel with the highest listed irradiance or the mask with a 365-day warranty.
This comparison covers the listed wavelengths, device forms, session controls and warranties, using the four 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 Panel, 660nm & 850nm Chill Score 9.6/10Check price on AmazonA 100-watt panel listing 660 and 850nm, 60 LEDs, 140 mW/cm² irradiance and a 3-year warranty.
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2
Red Light Therapy for Face and Neck Chill Score 9.5/10Check price on AmazonA face-and-neck mask listing 660 and 850nm, 2600mAh battery and 365-day warranty.
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3
Medisana 3D Red Light Therapy Mask for Face Chill Score 9.4/10Check price on AmazonA 336-LED mask listing 415, 630 and 830nm, 3 modes and a 5200mAh battery.
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4
Medisana 3D Red Light Therapy Mask for Face Chill Score 9.4/10Check price on AmazonA 336-LED mask listing 415, 630 and 830nm, 3 modes and a 5200mAh battery.
A 100-watt panel listing 660 and 850nm, 60 LEDs, 140 mW/cm² irradiance and a 3-year warranty.
Pros & ConsViewHide
Pros
- Lists 850nm with 660nm
- 140 mW/cm² irradiance stated
- 3-year manufacturer warranty
- 9 pulse modes, 0Hz to 300Hz
Cons
- No 830nm wavelength listed
- 60 LEDs, fewer than the masks
- Corded; needs an outlet
- No safety certification stated
A face-and-neck mask listing 660 and 850nm, 2600mAh battery and 365-day warranty.
Pros & ConsViewHide
Pros
- Lists 850nm with 660nm
- Face and neck coverage
- 365-day warranty listed
- FCC, CE and ROHS stated
Cons
- No 830nm wavelength listed
- No LED count stated
- 2600mAh, smaller than Medisana
- No safety certification stated
A 336-LED mask listing 415, 630 and 830nm, 3 modes and a 5200mAh battery.
Pros & ConsViewHide
Pros
- Lists 830nm among 3 wavelengths
- 336 LEDs with stated irradiance
- 3 timed modes: 6, 8 or 4 min
- 5200mAh, up to 4 hours
Cons
- No 850nm wavelength listed
- No warranty term stated
- No safety certification stated
- Recline recommended for comfort
A 336-LED mask listing 415, 630 and 830nm, 3 modes and a 5200mAh battery.
Pros & ConsViewHide
Pros
- Lists 830nm among 3 wavelengths
- 336 LEDs with stated irradiance
- 3 timed modes: 6, 8 or 4 min
- 5200mAh, up to 4 hours
Cons
- No 850nm wavelength listed
- No warranty term stated
- No safety certification stated
- Same specs as the other Medisana
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830nm vs 850nm at a glance
| 830nm devices | 850nm devices | |
|---|---|---|
| Listings here | 2 Medisana masks | YOEYOU mask, TroupePal panel |
| Wavelengths listed | 415, 630, 830nm | 660, 850nm (both) |
| Form | Face masks | Face-and-neck mask; light panel |
| LEDs listed | 336 each | Not stated (YOEYOU); 60 (TroupePal) |
| Session control | 3 modes: 6, 8 or 4 min | 3 intensity levels (YOEYOU); 9 pulse modes (TroupePal) |
| Warranty listed | Not stated | 365 days (YOEYOU); 3 years (TroupePal) |
The wavelengths each side lists
The 830nm side lists that wavelength in two Medisana masks, each with 336 LEDs at 415nm, 630nm and 830nm within a stated plus-or-minus 10nm tolerance. The 850nm side lists that wavelength in the YOEYOU mask (660nm and 850nm) and the TroupePal panel (660nm and 850nm).
The 830nm figure describes the Medisana masks only; the 850nm figure describes the YOEYOU and TroupePal only. Neither side lists the other’s headline wavelength.
Device forms and session times
The Medisana masks are 3D contoured silicone face masks with built-in eye protection, each with a 5200mAh battery for up to 4 hours of use. They offer 3 targeted modes: Anti-Aging at 6 minutes (630+830nm), Acne Care at 8 minutes (415+630nm), and Brightening at 4 minutes (all three), with listed irradiances of 33.48, 50.99 and 55.67 mW/cm².
The YOEYOU is a face-and-neck mask with 660nm and 850nm, a 2600mAh battery and 3 intensity levels, in soft silicone with adjustable straps. The TroupePal is a corded 100-watt panel, 13.98 x 7.87 inches, with 60 dual-chip LEDs, 9 pulse modes from 0Hz to 300Hz, and measured irradiance of 140 mW/cm² at 3 inches.
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 UL or ETL listing, so all score 0 for safety. The TroupePal lists a 3-year warranty and the YOEYOU a 365-day warranty; the Medisana masks state no warranty term.
| Product | Chill Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| TroupePal Light Panel | 9.6 | 29 | 21 | 21 | 0 | 4 |
| YOEYOU Face Neck Mask | 9.5 | 28 | 20 | 20 | 0 | 3 |
| Medisana 3D Mask | 9.4 | 29 | 20 | 20 | 0 | 0 |
| Medisana 3D Mask M08 | 9.4 | 29 | 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 with 336 LEDs.
- You want 3 timed modes with stated irradiances.
- You prefer a 5200mAh battery for weeks of use per charge.
- Built-in eye protection in a 3D silicone mask matters.
Choose 850nm if
- You want the panel with the highest listed irradiance, 140 mW/cm².
- You want the longest listed warranty here, 3 years.
- You want a face-and-neck mask with a 365-day warranty.
- You prefer a corded panel with 9 pulse modes.
Common questions
What is the difference between 830nm and 850nm red light therapy?
They are different near-infrared wavelengths that devices list. In these listings, 830nm appears in two face masks, while 850nm appears in a face-and-neck mask and a light panel. The devices also differ in LEDs, session controls and warranties.
Which device lists the most LEDs?
The Medisana masks list 336 LEDs each. The TroupePal panel lists 60 dual-chip LEDs. The YOEYOU mask does not state an LED count.
Do any of these list eye protection?
The Medisana masks list built-in eye protection. The other two listings do not mention it. Do not stare into the LEDs on any of them.
Which has the longest listed warranty?
The TroupePal panel lists a 3-year manufacturer warranty. The YOEYOU mask lists a 365-day warranty. The Medisana masks state no warranty term.
Are the two Medisana masks the same?
They list the same 336 LEDs, wavelengths, modes and 5200mAh battery, but they are separate listings with different package dimensions and model numbers. Compare the listing you are buying.
Back to all red light therapy reviews.
