Olight Arkfeld Pro vs Sofirn SC31 Pro size comparison
The Sofirn SC31 Pro is 2.5 mm (0.10 in) shorter than the Olight Arkfeld Pro, and 1.6 mm narrower at its widest point. Weights are published on different bases (without battery vs with battery), so compare them with care.
Olight Arkfeld Pro: Photo: Olight · Image policy
The Sofirn SC31 Pro is 2.5 mm (0.10 in) shorter than the Olight Arkfeld Pro, and 1.6 mm narrower at its widest point. Weights are published on different bases (without battery vs with battery), so compare them with care.
Dimensions
| Olight Arkfeld Pro Check price ↗ | Sofirn SC31 Pro Check price ↗ | |
| Length | 120 mm (4.72 in) | 117.5 mm (4.63 in)−2.5 mm |
| Head / width | 27 mm (1.06 in) | 25.4 mm (1.00 in)−1.6 mm |
| Thickness | 16 mm (0.63 in) | — |
| Weight | 111 g with battery | 59 g without battery |
| Battery | Built-in | 18650 |
| Max output | 1,300 lm | 2,000 lm |
| Throw | 102 m | — |
| Type | EDC | EDC |
| Price | $89.99 at olight.com, as of Nov 4, 2026 | not verified yet |
| Source | olight.com sourced | sofirnlight.com sourced Only head diameter listed |
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Arkfeld 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 120 mm (4.72 in), a difference of 2.5 mm (2%). At its widest point the Sofirn SC31 Pro is 1.6 mm slimmer (25.4 vs 27 mm). Weights are published on different bases (Olight Arkfeld Pro: 111 g with battery; Sofirn SC31 Pro: 59 g without battery), so they are not directly comparable.
Brightness and throw
The Sofirn SC31 Pro is rated brighter: 2,000 lm maximum vs 1,300 lm for the Olight Arkfeld Pro, 54% more.
Battery
The Olight Arkfeld Pro runs on a built-in rechargeable battery; the Sofirn SC31 Pro runs on a removable 18650 battery. Only the Sofirn SC31 Pro lets you swap in a charged spare.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Olight Arkfeld Pro if you want a built-in battery with no separate cell to buy. Choose the Sofirn SC31 Pro if you want a slimmer profile (1.6 mm narrower), more output (2,000 lm vs 1,300 lm) and a removable cell you can swap. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Olight Arkfeld Pro Check price ↗ Sofirn SC31 Pro
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Arkfeld Pro vs SC31 Pro FAQ
Which is smaller, the Olight Arkfeld Pro or the Sofirn SC31 Pro?
The Sofirn SC31 Pro is the shorter light: 117.5 mm (4.63 in) against 120 mm (4.72 in), a difference of 2.5 mm (2%). At its widest point the Sofirn SC31 Pro is 1.6 mm slimmer (25.4 vs 27 mm). Weights are published on different bases (Olight Arkfeld Pro: 111 g with battery; Sofirn SC31 Pro: 59 g without battery), so they are not directly comparable.
Which is brighter, the Olight Arkfeld Pro or the Sofirn SC31 Pro?
The Sofirn SC31 Pro is rated brighter: 2,000 lm maximum vs 1,300 lm for the Olight Arkfeld Pro, 54% more.
Do the Olight Arkfeld Pro and Sofirn SC31 Pro use the same battery?
The Olight Arkfeld Pro runs on a built-in rechargeable battery; the Sofirn SC31 Pro runs on a removable 18650 battery. Only the Sofirn SC31 Pro lets you swap in a charged spare.
Compare Olight Arkfeld Pro with similar lights
Compare Sofirn SC31 Pro with similar lights
More
Sources
- Olight Arkfeld Pro: specs from Olight product page (manufacturer). Photo from manufacturer: the maker's own product photo with the background removed, scaled to the published length and diameter (Photo: Olight; image policy). Price $89.99 from olight.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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