Olight ArkTac vs RovyVon S3 Pro size comparison
The RovyVon S3 Pro is 16.5 mm (0.65 in) shorter than the Olight ArkTac, 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 16.5 mm (0.65 in) shorter than the Olight ArkTac, 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 Check price ↗ | RovyVon S3 Pro Check price ↗ | |
| Length | 135.5 mm (5.33 in) | 119 mm (4.69 in)−16.5 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 | 136 g with battery | 150 g listed |
| Battery | Built-in | 18650 |
| Max output | 1,700 lm | 2,800 lm |
| Throw | 205 m | 130 m |
| Type | EDC | EDC |
| Price | $119.99 at olight.com, as of Nov 4, 2026 | from $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | olight.com sourced | batteryjunction.com sourced |
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ArkTac vs S3 Pro: how they differ
Size and weight
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 135.5 mm (5.33 in), a difference of 16.5 mm (12%). At their widest points they are about the same (29 vs 29 mm). Weights are published on different bases (Olight ArkTac: 136 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Brightness and throw
The RovyVon S3 Pro is rated brighter: 2,800 lm maximum vs 1,700 lm for the Olight ArkTac, 65% more. For beam distance the Olight ArkTac reaches further: 205 m vs 130 m rated throw (58% more).
Battery
The Olight ArkTac 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 was $119.99 at olight.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $40.04 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 if you want longer throw (205 m vs 130 m) and a built-in battery with no separate cell to buy. Choose the RovyVon S3 Pro if you want a shorter light (16.5 mm shorter), more output (2,800 lm vs 1,700 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 ArkTac Check price ↗ RovyVon S3 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
ArkTac vs S3 Pro FAQ
Which is smaller, the Olight ArkTac or the RovyVon S3 Pro?
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 135.5 mm (5.33 in), a difference of 16.5 mm (12%). At their widest points they are about the same (29 vs 29 mm). Weights are published on different bases (Olight ArkTac: 136 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Which is brighter, the Olight ArkTac or the RovyVon S3 Pro?
The RovyVon S3 Pro is rated brighter: 2,800 lm maximum vs 1,700 lm for the Olight ArkTac, 65% more. For beam distance the Olight ArkTac reaches further: 205 m vs 130 m rated throw (58% more).
Which is cheaper, the Olight ArkTac or the RovyVon S3 Pro?
When we checked on Nov 4, 2026, the Olight ArkTac was $119.99 at olight.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $40.04 less. Prices change often, so check the current price before you buy.
Do the Olight ArkTac and RovyVon S3 Pro use the same battery?
The Olight ArkTac 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 with similar lights
Compare RovyVon S3 Pro with similar lights
More
Sources
- Olight ArkTac: specs from Olight product page (manufacturer). Drawing: shape measured from manufacturer photo (olight.com), scaled to the published length and diameter. Price $119.99 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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