Nitecore E4K vs Olight Arkfeld Pro size comparison
The Olight Arkfeld Pro is 3 mm (0.12 in) longer than the Nitecore E4K, and 2 mm narrower at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
The Olight Arkfeld Pro is 3 mm (0.12 in) longer than the Nitecore E4K, and 2 mm narrower at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
Dimensions
| Nitecore E4K Check price ↗ | Olight Arkfeld Pro Check price ↗ | |
| Length | 117 mm (4.61 in) | 120 mm (4.72 in)+3 mm |
| Head / width | 29 mm (1.14 in) | 27 mm (1.06 in)−2 mm |
| Body | 26 mm (1.02 in) | — |
| Thickness | — | 16 mm (0.63 in) |
| Weight | 80 g listed | 111 g with battery |
| Battery | 21700 | Built-in |
| Max output | 4,400 lm | 1,300 lm |
| Throw | 211 m | 102 m |
| Type | EDC | EDC |
| Price | not verified yet | $89.99 at olight.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | olight.com sourced |
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E4K vs Arkfeld Pro: how they differ
Size and weight
The Nitecore E4K is the shorter light: 117 mm (4.61 in) against 120 mm (4.72 in), a difference of 3 mm (3%). At its widest point the Olight Arkfeld Pro is 2 mm slimmer (27 vs 29 mm). Weights are published on different bases (Nitecore E4K: 80 g listed; Olight Arkfeld Pro: 111 g with battery), so they are not directly comparable.
Brightness and throw
The Nitecore E4K is rated brighter: 4,400 lm maximum vs 1,300 lm for the Olight Arkfeld Pro, 238% more. For beam distance the Nitecore E4K reaches further: 211 m vs 102 m rated throw (107% more).
Battery
The Nitecore E4K runs on a removable 21700 battery; the Olight Arkfeld Pro runs on a built-in rechargeable battery. Only the Nitecore E4K lets you swap in a charged spare.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Nitecore E4K if you want a shorter light (3 mm shorter), more output (4,400 lm vs 1,300 lm), longer throw (211 m vs 102 m) and a removable cell you can swap. Choose the Olight Arkfeld Pro if you want a slimmer profile (2 mm narrower) and 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 ↗ Nitecore E4K Check price ↗ Olight Arkfeld Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
E4K vs Arkfeld Pro FAQ
Which is smaller, the Nitecore E4K or the Olight Arkfeld Pro?
The Nitecore E4K is the shorter light: 117 mm (4.61 in) against 120 mm (4.72 in), a difference of 3 mm (3%). At its widest point the Olight Arkfeld Pro is 2 mm slimmer (27 vs 29 mm). Weights are published on different bases (Nitecore E4K: 80 g listed; Olight Arkfeld Pro: 111 g with battery), so they are not directly comparable.
Which is brighter, the Nitecore E4K or the Olight Arkfeld Pro?
The Nitecore E4K is rated brighter: 4,400 lm maximum vs 1,300 lm for the Olight Arkfeld Pro, 238% more. For beam distance the Nitecore E4K reaches further: 211 m vs 102 m rated throw (107% more).
Do the Nitecore E4K and Olight Arkfeld Pro use the same battery?
The Nitecore E4K runs on a removable 21700 battery; the Olight Arkfeld Pro runs on a built-in rechargeable battery. Only the Nitecore E4K lets you swap in a charged spare.
Compare Nitecore E4K with similar lights
Compare Olight Arkfeld Pro with similar lights
More
Sources
- Nitecore E4K: specs from manufacturer published specs as listed by batteryjunction.com. No verified price yet.
- Olight Arkfeld Pro: specs from Olight product page (manufacturer). Price $89.99 from olight.com, checked Nov 4, 2026; prices change often.
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