Olight ArkTac vs Olight ArkTac Ultra size comparison
The Olight ArkTac Ultra is about the same length as the Olight ArkTac, with about the same max diameter/width. It is 4 g heavier (with battery).
The Olight ArkTac Ultra is about the same length as the Olight ArkTac, with about the same max diameter/width. It is 4 g heavier (with battery).
Dimensions
| Olight ArkTac Check price ↗ | Olight ArkTac Ultra Check price ↗ | |
| Length | 135.5 mm (5.33 in) | 135.6 mm (5.34 in)+0.1 mm |
| Head / width | 29 mm (1.14 in) | 29 mm (1.14 in)same |
| Thickness | 17 mm (0.67 in) | 17 mm (0.67 in)same |
| Weight | 136 g with battery | 140 g with battery+4 g |
| Battery | Built-in | Built-in |
| Max output | 1,700 lm | — |
| Throw | 205 m | — |
| Type | EDC | EDC |
| Price | $119.99 at olight.com, as of Nov 4, 2026 | $159.99 at olight.com, as of Nov 4, 2026 |
| Source | olight.com sourced | olight.com unverified Dims from ArkTac series comparison table (row assumed to be Ultra); re-check on ArkTac Ultra page |
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ArkTac vs ArkTac Ultra: how they differ
Size and weight
The Olight ArkTac and Olight ArkTac Ultra are the same length to within half a millimetre (135.5 mm (5.33 in)). At their widest points they are about the same (29 vs 29 mm). The Olight ArkTac is 4 g lighter (136 g vs 140 g, with battery).
Brightness and throw
The Olight ArkTac is rated at 1,700 lm; we have no published maximum for the Olight ArkTac Ultra.
Battery
Both run on a built-in rechargeable battery, so neither needs a separate battery.
Price
When we checked on Nov 4, 2026, the Olight ArkTac was $119.99 at olight.com and the Olight ArkTac Ultra $159.99 at olight.com, so the Olight ArkTac cost $40.00 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog with a flat body.
Which should you buy?
On the specs we track, these two are closely matched, so decide on price, user interface and the features you care about. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Olight ArkTac Check price ↗ Olight ArkTac Ultra
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
ArkTac vs ArkTac Ultra FAQ
Which is smaller, the Olight ArkTac or the Olight ArkTac Ultra?
The Olight ArkTac and Olight ArkTac Ultra are the same length to within half a millimetre (135.5 mm (5.33 in)). At their widest points they are about the same (29 vs 29 mm). The Olight ArkTac is 4 g lighter (136 g vs 140 g, with battery).
Which is cheaper, the Olight ArkTac or the Olight ArkTac Ultra?
When we checked on Nov 4, 2026, the Olight ArkTac was $119.99 at olight.com and the Olight ArkTac Ultra $159.99 at olight.com, so the Olight ArkTac cost $40.00 less. Prices change often, so check the current price before you buy.
Do the Olight ArkTac and Olight ArkTac Ultra use the same battery?
Both run on a built-in rechargeable battery, so neither needs a separate battery.
Compare Olight ArkTac with similar lights
Compare Olight ArkTac Ultra 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.
- 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.
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