Red Light Rising
Half Stack 3.0 review
A useful lesson in reading this category: its number looks low only because it is honest. Compare it against other spectrometer readings at a stated distance, not against undistanced marketing figures.
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What we like
- Publishes rated and real power draw side by side (300W rated, 108W real)
- Names the measurement instrument and states the distance
- 365 day money-back trial
What to know
- 57 mW/cm2 looks weak beside rivals quoting 245, but theirs is a properly distanced spectrometer reading and the others are not
- Self-measured rather than lab verified
- Priced in GBP
Full specifications
Anything marked not published is missing from the manufacturer's own materials. We do not fill those gaps with estimates.
| Price | £599 |
|---|---|
| Wavelengths | 630nm · 660nm · 810nm · 850nm |
| LED count | 100 |
| Irradiance | Brand claim57.0 mW/cm2 at 15 cm, self-measured but with the instrument named (Hopoo OHSP-350F spectral irradiance colorimeter) and the distance stated, which is more than most brands manage |
| Coverage | 50 x 22 x 6 cm; arms, legs or torso |
| Power draw | 108W |
| FDA status | unknown |
| Warranty | 3 years |
| Returns | 365 days |
Best for
- Honest numbers
- 365 day trial
- Torso coverage
Compare it
Research at these wavelengths
Studies whose protocol used a wavelength this device emits, within 15nm. Each records the dose it delivered, which is the number to hold a marketing claim against.
Sources
Specifications on this page come from the manufacturer and the independent testing listed below. Verified August 31, 2026.
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