Olight Arkfeld vs Sofirn SC31 Pro size comparison
The Sofirn SC31 Pro is 7.5 mm (0.30 in) longer than the Olight Arkfeld, with about the same max diameter/width. Weights are published on different bases (without battery vs with battery), so compare them with care.
The Sofirn SC31 Pro is 7.5 mm (0.30 in) longer than the Olight Arkfeld, with about the same max diameter/width. Weights are published on different bases (without battery vs with battery), so compare them with care.
Dimensions
| Olight Arkfeld Check price ↗ | Sofirn SC31 Pro Check price ↗ | |
| Length | 110 mm (4.33 in) | 117.5 mm (4.63 in)+7.5 mm |
| Head / width | 25 mm (0.98 in) | 25.4 mm (1.00 in)+0.4 mm |
| Thickness | 15 mm (0.59 in) | — |
| Weight | 87 g with battery | 59 g without battery |
| Battery | Built-in | 18650 |
| Max output | 1,000 lm | 2,000 lm |
| Throw | 101 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 vs SC31 Pro: how they differ
Size and weight
The Olight Arkfeld is the shorter light: 110 mm (4.33 in) against 117.5 mm (4.63 in), a difference of 7.5 mm (6%). At their widest points they are about the same (25 vs 25.4 mm). Weights are published on different bases (Olight Arkfeld: 87 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 1,000 lm for the Olight Arkfeld, 100% more.
Battery
The Olight Arkfeld 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 if you want a shorter light (7.5 mm shorter) and a built-in battery with no separate cell to buy. Choose the Sofirn SC31 Pro if you want more output (2,000 lm vs 1,000 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 Check price ↗ Sofirn SC31 Pro
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Arkfeld vs SC31 Pro FAQ
Which is smaller, the Olight Arkfeld or the Sofirn SC31 Pro?
The Olight Arkfeld is the shorter light: 110 mm (4.33 in) against 117.5 mm (4.63 in), a difference of 7.5 mm (6%). At their widest points they are about the same (25 vs 25.4 mm). Weights are published on different bases (Olight Arkfeld: 87 g with battery; Sofirn SC31 Pro: 59 g without battery), so they are not directly comparable.
Which is brighter, the Olight Arkfeld or the Sofirn SC31 Pro?
The Sofirn SC31 Pro is rated brighter: 2,000 lm maximum vs 1,000 lm for the Olight Arkfeld, 100% more.
Do the Olight Arkfeld and Sofirn SC31 Pro use the same battery?
The Olight Arkfeld 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 with similar lights
Compare Sofirn SC31 Pro with similar lights
More
Sources
- Olight Arkfeld: specs from Olight product page (manufacturer). 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. No verified price yet.
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