Comfytemp K4037 55W Panel: Specifications, Price and Verdict
Database record · last reviewed August 2026
FDA status: Not stated as cleared; marketed FSA/HSA eligible
| Wavelengths | 660nm, 850nm |
|---|---|
| Wavelength allocation | Not published by the brand |
| LEDs | not published |
| LED type | not published |
| Irradiance (brand) | 143 mW/cm² at 6 in (method not stated) |
| Panel size | arm to 40in |
| Beam angle | not published |
| Modes | Red-only, NIR-only, or combined light modes with intensity and timer control via on-device buttons and companion app |
| Stand | Built-in folding stand |
| Trial | 30 days |
| Restocking fee | 15% restocking fee on change-of-mind/non-defective returns within the 30-day window |
| Warranty | 1 years |
| FDA status | Not stated as cleared; marketed FSA/HSA eligible |
| Price | $120 verified 2026-08-13 |
Irradiance in context
The Comfytemp K4037 55W Panel lists 143 mW/cm² at 6 inches. Measurement note: Brand-stated 159 mW/cm2 at 6 in; measurement method not named Because it carries surface reds (660nm) alongside deeper near-infrared (850nm), it can serve skin-level sessions and deeper muscle or joint work alike. Put your actual distance and this figure into the dose calculator to land inside a studied 10 to 60 J/cm² range; when the number is method-unstated or solar-meter based, work from roughly half of it.
What stands out
- No standout strengths recorded beyond the table above.
What to check before buying
- returns can carry a fee: 15% restocking fee on change-of-mind/non-defective returns within the 30-day window
- trial window is only 30 days
- the headline irradiance figure does not state its measurement method, so treat it as not comparable to spectrometer numbers
Alternatives at a similar price
Frequently asked questions
Is the Comfytemp K4037 55W Panel FDA approved?
No home red light therapy panel is FDA approved. Its regulatory position per the brand: Not stated as cleared; marketed FSA/HSA eligible. Registration is a listing, not a clearance.
What wavelengths does the Comfytemp K4037 55W Panel use?
660nm, 850nm
What does the Comfytemp K4037 55W Panel cost?
It is priced at $120 per the last verification. Prices change; confirm on the brand site.
Sources: manufacturer specifications via manufacturer site (2026-08-13 research); third-party measurement data where noted is attributed inline. Spec fields marked "not published" or "not verified" reflect gaps in the brand's public data, not omissions in ours. Report a correction via the contact page.