Olight ArkTac Ultra vs Sofirn SC33 size comparison
The Sofirn SC33 is 4.6 mm (0.18 in) shorter than the Olight ArkTac Ultra, and 3 mm wider at its widest point. Weights are published on different bases (without battery vs with battery), so compare them with care.
The Sofirn SC33 is 4.6 mm (0.18 in) shorter than the Olight ArkTac Ultra, and 3 mm wider at its widest point. Weights are published on different bases (without battery vs with battery), so compare them with care.
Dimensions
| Olight ArkTac Ultra Check price ↗ | Sofirn SC33 Check price ↗ | |
| Length | 135.6 mm (5.34 in) | 131 mm (5.16 in)−4.6 mm |
| Head / width | 29 mm (1.14 in) | 32 mm (1.26 in)+3 mm |
| Thickness | 17 mm (0.67 in) | — |
| Weight | 140 g with battery | 110 g without battery |
| Battery | Built-in | 21700 |
| Max output | — | 5,200 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $159.99 at olight.com, as of Nov 4, 2026 | from $41.99 at flashlightgo.com, as of Nov 4, 2026 |
| Source | olight.com unverified Dims from ArkTac series comparison table (row assumed to be Ultra); re-check on ArkTac Ultra page | flashlightgo.com sourced Only head diameter listed |
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ArkTac Ultra vs SC33: how they differ
Size and weight
The Sofirn SC33 is the shorter light: 131 mm (5.16 in) against 135.6 mm (5.34 in), a difference of 4.6 mm (3%). At its widest point the Olight ArkTac Ultra is 3 mm slimmer (29 vs 32 mm). Weights are published on different bases (Olight ArkTac Ultra: 140 g with battery; Sofirn SC33: 110 g without battery), so they are not directly comparable.
Brightness and throw
The Sofirn SC33 is rated at 5,200 lm; we have no published maximum for the Olight ArkTac Ultra.
Battery
The Olight ArkTac Ultra runs on a built-in rechargeable battery; the Sofirn SC33 runs on a removable 21700 battery. Only the Sofirn SC33 lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Olight ArkTac Ultra was $159.99 at olight.com and the Sofirn SC33 from $41.99 at flashlightgo.com, so the Sofirn SC33 cost $118.00 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Olight ArkTac Ultra if you want a slimmer profile (3 mm narrower) and a built-in battery with no separate cell to buy. Choose the Sofirn SC33 if you want a shorter light (4.6 mm shorter) 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 ArkTac Ultra Check price ↗ Sofirn SC33
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ArkTac Ultra vs SC33 FAQ
Which is smaller, the Olight ArkTac Ultra or the Sofirn SC33?
The Sofirn SC33 is the shorter light: 131 mm (5.16 in) against 135.6 mm (5.34 in), a difference of 4.6 mm (3%). At its widest point the Olight ArkTac Ultra is 3 mm slimmer (29 vs 32 mm). Weights are published on different bases (Olight ArkTac Ultra: 140 g with battery; Sofirn SC33: 110 g without battery), so they are not directly comparable.
Which is cheaper, the Olight ArkTac Ultra or the Sofirn SC33?
When we checked on Nov 4, 2026, the Olight ArkTac Ultra was $159.99 at olight.com and the Sofirn SC33 from $41.99 at flashlightgo.com, so the Sofirn SC33 cost $118.00 less. Prices change often, so check the current price before you buy.
Do the Olight ArkTac Ultra and Sofirn SC33 use the same battery?
The Olight ArkTac Ultra runs on a built-in rechargeable battery; the Sofirn SC33 runs on a removable 21700 battery. Only the Sofirn SC33 lets you swap in a charged spare.
Compare Olight ArkTac Ultra with similar lights
Compare Sofirn SC33 with similar lights
More
Sources
- Olight ArkTac Ultra: specs from Olight product page (manufacturer). Drawing: shape measured from manufacturer photo (olight.com), scaled to the published length and diameter. Some values could not be confirmed on a second source and are marked unverified. Price $159.99 from olight.com, checked Nov 4, 2026; prices change often.
- Sofirn SC33: specs from manufacturer published specs as listed by flashlightgo.com. Drawing: outline from published specs. Price from $41.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
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