Emisar D4K vs Olight Arkfeld Pro size comparison
The Olight Arkfeld Pro is 17 mm (0.67 in) longer than the Emisar D4K, and 1 mm narrower at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
The Olight Arkfeld Pro is 17 mm (0.67 in) longer than the Emisar D4K, and 1 mm narrower at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
Dimensions
| Emisar D4K Check price ↗ | Olight Arkfeld Pro Check price ↗ | |
| Length | 103 mm (4.06 in) | 120 mm (4.72 in)+17 mm |
| Head / width | 28 mm (1.10 in) | 27 mm (1.06 in)−1 mm |
| Body | 26.5 mm (1.04 in) | — |
| Thickness | — | 16 mm (0.63 in) |
| Weight | 58 g without battery | 111 g with battery |
| Battery | 21700 | Built-in |
| Max output | — | 1,300 lm |
| Throw | — | 102 m |
| Type | EDC | EDC |
| Price | $39.69 at intl-outdoor.com, as of Nov 4, 2026 | $89.99 at olight.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Output depends on LED option | olight.com sourced |
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D4K vs Arkfeld Pro: how they differ
Size and weight
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 120 mm (4.72 in), a difference of 17 mm (14%). At its widest point the Olight Arkfeld Pro is 1 mm slimmer (27 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; Olight Arkfeld Pro: 111 g with battery), so they are not directly comparable.
Brightness and throw
The Olight Arkfeld Pro is rated at 1,300 lm; we have no published maximum for the Emisar D4K. Output for the Emisar D4K depends on the LED option chosen.
Battery
The Emisar D4K runs on a removable 21700 battery; the Olight Arkfeld Pro runs on a built-in rechargeable battery. Only the Emisar D4K lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Emisar D4K was $39.69 at intl-outdoor.com and the Olight Arkfeld Pro $89.99 at olight.com, so the Emisar D4K cost $50.30 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 Emisar D4K if you want a shorter light (17 mm shorter) and a removable cell you can swap. Choose the Olight Arkfeld Pro 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 ↗ Emisar D4K Check price ↗ Olight Arkfeld Pro
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D4K vs Arkfeld Pro FAQ
Which is smaller, the Emisar D4K or the Olight Arkfeld Pro?
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 120 mm (4.72 in), a difference of 17 mm (14%). At its widest point the Olight Arkfeld Pro is 1 mm slimmer (27 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; Olight Arkfeld Pro: 111 g with battery), so they are not directly comparable.
Which is cheaper, the Emisar D4K or the Olight Arkfeld Pro?
When we checked on Nov 4, 2026, the Emisar D4K was $39.69 at intl-outdoor.com and the Olight Arkfeld Pro $89.99 at olight.com, so the Emisar D4K cost $50.30 less. Prices change often, so check the current price before you buy.
Do the Emisar D4K and Olight Arkfeld Pro use the same battery?
The Emisar D4K runs on a removable 21700 battery; the Olight Arkfeld Pro runs on a built-in rechargeable battery. Only the Emisar D4K lets you swap in a charged spare.
Compare Emisar D4K with similar lights
Compare Olight Arkfeld Pro with similar lights
More
Sources
- Emisar D4K: specs from Emisar product page (manufacturer). Price $39.69 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- 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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