RovyVon S3 Pro vs Sofirn SC31 Pro size comparison
The Sofirn SC31 Pro is 1.5 mm (0.06 in) shorter than the RovyVon S3 Pro, and 3.6 mm narrower at its widest point. Weights are published on different bases (without battery vs listed), so compare them with care.
The Sofirn SC31 Pro is 1.5 mm (0.06 in) shorter than the RovyVon S3 Pro, and 3.6 mm narrower at its widest point. Weights are published on different bases (without battery vs listed), so compare them with care.
Dimensions
| RovyVon S3 Pro Check price ↗ | Sofirn SC31 Pro Check price ↗ | |
| Length | 119 mm (4.69 in) | 117.5 mm (4.63 in)−1.5 mm |
| Head / width | 29 mm (1.14 in) | 25.4 mm (1.00 in)−3.6 mm |
| Body | 29 mm (1.14 in) | — |
| Weight | 150 g listed | 59 g without battery |
| Battery | 18650 | 18650 |
| Max output | 2,800 lm | 2,000 lm |
| Throw | 130 m | — |
| Type | EDC | EDC |
| Price | from $79.95 at batteryjunction.com, as of Nov 4, 2026 | not verified yet |
| Source | batteryjunction.com sourced | sofirnlight.com sourced Only head diameter listed |
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S3 Pro vs SC31 Pro: how they differ
Size and weight
The Sofirn SC31 Pro is the shorter light: 117.5 mm (4.63 in) against 119 mm (4.69 in), a difference of 1.5 mm (1%). At its widest point the Sofirn SC31 Pro is 3.6 mm slimmer (25.4 vs 29 mm). Weights are published on different bases (RovyVon S3 Pro: 150 g listed; Sofirn SC31 Pro: 59 g without battery), so they are not directly comparable.
Brightness and throw
The RovyVon S3 Pro is rated brighter: 2,800 lm maximum vs 2,000 lm for the Sofirn SC31 Pro, 40% more.
Battery
Both run on a removable 18650 battery, so spare cells work in either light.
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the RovyVon S3 Pro if you want more output (2,800 lm vs 2,000 lm). Choose the Sofirn SC31 Pro if you want a slimmer profile (3.6 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ RovyVon S3 Pro Check price ↗ Sofirn SC31 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
S3 Pro vs SC31 Pro FAQ
Which is smaller, the RovyVon S3 Pro or the Sofirn SC31 Pro?
The Sofirn SC31 Pro is the shorter light: 117.5 mm (4.63 in) against 119 mm (4.69 in), a difference of 1.5 mm (1%). At its widest point the Sofirn SC31 Pro is 3.6 mm slimmer (25.4 vs 29 mm). Weights are published on different bases (RovyVon S3 Pro: 150 g listed; Sofirn SC31 Pro: 59 g without battery), so they are not directly comparable.
Which is brighter, the RovyVon S3 Pro or the Sofirn SC31 Pro?
The RovyVon S3 Pro is rated brighter: 2,800 lm maximum vs 2,000 lm for the Sofirn SC31 Pro, 40% more.
Do the RovyVon S3 Pro and Sofirn SC31 Pro use the same battery?
Both run on a removable 18650 battery, so spare cells work in either light.
Compare RovyVon S3 Pro with similar lights
Compare Sofirn SC31 Pro with similar lights
More
Sources
- RovyVon S3 Pro: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price from $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- Sofirn SC31 Pro: specs from manufacturer published specs as listed by sofirnlight.com. Drawing: outline from published specs. No verified price yet.
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