Acebeam E70 vs Olight ArkTac size comparison
The Olight ArkTac is 7.5 mm (0.30 in) longer than the Acebeam E70, and 1 mm narrower at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
The Olight ArkTac is 7.5 mm (0.30 in) longer than the Acebeam E70, and 1 mm narrower at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
Dimensions
| Acebeam E70 Check price ↗ | Olight ArkTac Check price ↗ | |
| Length | 128 mm (5.04 in) | 135.5 mm (5.33 in)+7.5 mm |
| Head / width | 30 mm (1.18 in) | 29 mm (1.14 in)−1 mm |
| Body | 27 mm (1.06 in) | — |
| Thickness | — | 17 mm (0.67 in) |
| Weight | 102 g listed | 136 g with battery |
| Battery | 21700 | Built-in |
| Max output | 4,600 lm | 1,700 lm |
| Throw | 240 m | 205 m |
| Type | EDC | EDC |
| Price | not verified yet | $119.99 at olight.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced Aluminum version | olight.com sourced |
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E70 vs ArkTac: how they differ
Size and weight
The Acebeam E70 is the shorter light: 128 mm (5.04 in) against 135.5 mm (5.33 in), a difference of 7.5 mm (6%). At its widest point the Olight ArkTac is 1 mm slimmer (29 vs 30 mm). Weights are published on different bases (Acebeam E70: 102 g listed; Olight ArkTac: 136 g with battery), so they are not directly comparable.
Brightness and throw
The Acebeam E70 is rated brighter: 4,600 lm maximum vs 1,700 lm for the Olight ArkTac, 171% more. For beam distance the Acebeam E70 reaches further: 240 m vs 205 m rated throw (17% more).
Battery
The Acebeam E70 runs on a removable 21700 battery; the Olight ArkTac runs on a built-in rechargeable battery. Only the Acebeam E70 lets you swap in a charged spare.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Acebeam E70 if you want a shorter light (7.5 mm shorter), more output (4,600 lm vs 1,700 lm), longer throw (240 m vs 205 m) and a removable cell you can swap. Choose the Olight ArkTac if you want a built-in battery with no separate cell to buy. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Acebeam E70 Check price ↗ Olight ArkTac
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
E70 vs ArkTac FAQ
Which is smaller, the Acebeam E70 or the Olight ArkTac?
The Acebeam E70 is the shorter light: 128 mm (5.04 in) against 135.5 mm (5.33 in), a difference of 7.5 mm (6%). At its widest point the Olight ArkTac is 1 mm slimmer (29 vs 30 mm). Weights are published on different bases (Acebeam E70: 102 g listed; Olight ArkTac: 136 g with battery), so they are not directly comparable.
Which is brighter, the Acebeam E70 or the Olight ArkTac?
The Acebeam E70 is rated brighter: 4,600 lm maximum vs 1,700 lm for the Olight ArkTac, 171% more. For beam distance the Acebeam E70 reaches further: 240 m vs 205 m rated throw (17% more).
Do the Acebeam E70 and Olight ArkTac use the same battery?
The Acebeam E70 runs on a removable 21700 battery; the Olight ArkTac runs on a built-in rechargeable battery. Only the Acebeam E70 lets you swap in a charged spare.
Compare Acebeam E70 with similar lights
Compare Olight ArkTac with similar lights
More
Sources
- Acebeam E70: specs from manufacturer published specs as listed by batteryjunction.com. No verified price yet.
- Olight ArkTac: specs from Olight product page (manufacturer). Price $119.99 from olight.com, checked Nov 4, 2026; prices change often.
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