How to read this comparison
Every product is compared using the same manufacturer-published fields: wavelengths, diode count, irradiance, session length, regulatory status, fit, power and European list price. Dose per session is calculated from irradiance and session length, never estimated. There is no scoring, ranking, star rating or “best” award.
Rows are ordered alphabetically by brand, no missing value is filled in by inference, and each manufacturer product page is linked in the sources. Specifications checked 19 August 2026; they change without notice.
Compiled by Steven Knowles · last reviewed 22 August 2026. Corrections: every figure links to the manufacturer page it came from.