Olight ArkTac Ultra vs RovyVon S3 Pro size comparison
The RovyVon S3 Pro is 16.6 mm (0.65 in) shorter than the Olight ArkTac Ultra, with about the same max diameter/width. Weights are published on different bases (listed vs with battery), so compare them with care.
The RovyVon S3 Pro is 16.6 mm (0.65 in) shorter than the Olight ArkTac Ultra, with about the same max diameter/width. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Olight ArkTac Ultra Check price ↗ | RovyVon S3 Pro Check price ↗ | |
| Length | 135.6 mm (5.34 in) | 119 mm (4.69 in)−16.6 mm |
| Head / width | 29 mm (1.14 in) | 29 mm (1.14 in)same |
| Body | — | 29 mm (1.14 in) |
| Thickness | 17 mm (0.67 in) | — |
| Weight | 140 g with battery | 150 g listed |
| Battery | Built-in | 18650 |
| Max output | — | 2,800 lm |
| Throw | — | 130 m |
| Type | EDC | EDC |
| Price | $159.99 at olight.com, as of Nov 4, 2026 | from $79.95 at batteryjunction.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 | batteryjunction.com sourced |
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ArkTac Ultra vs S3 Pro: how they differ
Size and weight
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 135.6 mm (5.34 in), a difference of 16.6 mm (12%). At their widest points they are about the same (29 vs 29 mm). Weights are published on different bases (Olight ArkTac Ultra: 140 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Brightness and throw
The RovyVon S3 Pro is rated at 2,800 lm; we have no published maximum for the Olight ArkTac Ultra.
Battery
The Olight ArkTac Ultra runs on a built-in rechargeable battery; the RovyVon S3 Pro runs on a removable 18650 battery. Only the RovyVon S3 Pro 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 RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $80.04 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 built-in battery with no separate cell to buy. Choose the RovyVon S3 Pro if you want a shorter light (16.6 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 ↗ RovyVon S3 Pro
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ArkTac Ultra vs S3 Pro FAQ
Which is smaller, the Olight ArkTac Ultra or the RovyVon S3 Pro?
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 135.6 mm (5.34 in), a difference of 16.6 mm (12%). At their widest points they are about the same (29 vs 29 mm). Weights are published on different bases (Olight ArkTac Ultra: 140 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Which is cheaper, the Olight ArkTac Ultra or the RovyVon S3 Pro?
When we checked on Nov 4, 2026, the Olight ArkTac Ultra was $159.99 at olight.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $80.04 less. Prices change often, so check the current price before you buy.
Do the Olight ArkTac Ultra and RovyVon S3 Pro use the same battery?
The Olight ArkTac Ultra runs on a built-in rechargeable battery; the RovyVon S3 Pro runs on a removable 18650 battery. Only the RovyVon S3 Pro lets you swap in a charged spare.
Compare Olight ArkTac Ultra with similar lights
Compare RovyVon S3 Pro 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.
- 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.
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