Emisar D4K vs Olight ArkPro Lite size comparison
The Olight ArkPro Lite is 8 mm (0.31 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 ArkPro Lite is 8 mm (0.31 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 ArkPro Lite Check price ↗ | |
| Length | 103 mm (4.06 in) | 111 mm (4.37 in)+8 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 | 105 g with battery |
| Battery | 21700 | Built-in |
| Max output | — | 1,200 lm |
| Throw | — | 94 m |
| Type | EDC | EDC |
| Price | $39.69 at intl-outdoor.com, as of Nov 4, 2026 | not verified yet |
| Source | intl-outdoor.com sourced Output depends on LED option | olight.com sourced Dims from ArkPro series comparison table; output/throw from Battery Junction |
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D4K vs ArkPro Lite: how they differ
Size and weight
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 111 mm (4.37 in), a difference of 8 mm (7%). At its widest point the Olight ArkPro Lite is 1 mm slimmer (27 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; Olight ArkPro Lite: 105 g with battery), so they are not directly comparable.
Brightness and throw
The Olight ArkPro Lite is rated at 1,200 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 ArkPro Lite runs on a built-in rechargeable battery. Only the Emisar D4K lets you swap in a charged spare.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Emisar D4K if you want a shorter light (8 mm shorter) and a removable cell you can swap. Choose the Olight ArkPro Lite 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 ArkPro Lite
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D4K vs ArkPro Lite FAQ
Which is smaller, the Emisar D4K or the Olight ArkPro Lite?
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 111 mm (4.37 in), a difference of 8 mm (7%). At its widest point the Olight ArkPro Lite is 1 mm slimmer (27 vs 28 mm). Weights are published on different bases (Emisar D4K: 58 g without battery; Olight ArkPro Lite: 105 g with battery), so they are not directly comparable.
Do the Emisar D4K and Olight ArkPro Lite use the same battery?
The Emisar D4K runs on a removable 21700 battery; the Olight ArkPro Lite 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 ArkPro Lite 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 ArkPro Lite: specs from Olight product page (manufacturer). No verified price yet.
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