Emisar D1K vs Nitecore E4K size comparison
The Nitecore E4K is 3 mm (0.12 in) longer than the Emisar D1K, and 6 mm narrower at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The Nitecore E4K is 3 mm (0.12 in) longer than the Emisar D1K, and 6 mm narrower at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Emisar D1K Check price ↗ | Nitecore E4K Check price ↗ | |
| Length | 114 mm (4.49 in) | 117 mm (4.61 in)+3 mm |
| Head / width | 35 mm (1.38 in) | 29 mm (1.14 in)−6 mm |
| Body | 26.5 mm (1.04 in) | 26 mm (1.02 in)−0.5 mm |
| Weight | 89 g without battery | 80 g listed |
| Battery | 21700 | 21700 |
| Max output | 1,200 lm | 4,400 lm |
| Throw | — | 211 m |
| Type | EDC | EDC |
| Price | $39.95 at intl-outdoor.com, as of Nov 4, 2026 | not verified yet |
| Source | intl-outdoor.com sourced Pocket thrower; lumens for SFT-25 | batteryjunction.com sourced |
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D1K vs E4K: how they differ
Size and weight
The Emisar D1K is the shorter light: 114 mm (4.49 in) against 117 mm (4.61 in), a difference of 3 mm (3%). At its widest point the Nitecore E4K is 6 mm slimmer (29 vs 35 mm). Weights are published on different bases (Emisar D1K: 89 g without battery; Nitecore E4K: 80 g listed), so they are not directly comparable.
Brightness and throw
The Nitecore E4K is rated brighter: 4,400 lm maximum vs 1,200 lm for the Emisar D1K, 267% more.
Battery
Both run on a removable 21700 battery, so spare cells work in either light.
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the Emisar D1K if you want a shorter light (3 mm shorter). Choose the Nitecore E4K if you want a slimmer profile (6 mm narrower) and more output (4,400 lm vs 1,200 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Emisar D1K Check price ↗ Nitecore E4K
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D1K vs E4K FAQ
Which is smaller, the Emisar D1K or the Nitecore E4K?
The Emisar D1K is the shorter light: 114 mm (4.49 in) against 117 mm (4.61 in), a difference of 3 mm (3%). At its widest point the Nitecore E4K is 6 mm slimmer (29 vs 35 mm). Weights are published on different bases (Emisar D1K: 89 g without battery; Nitecore E4K: 80 g listed), so they are not directly comparable.
Which is brighter, the Emisar D1K or the Nitecore E4K?
The Nitecore E4K is rated brighter: 4,400 lm maximum vs 1,200 lm for the Emisar D1K, 267% more.
Do the Emisar D1K and Nitecore E4K use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Emisar D1K with similar lights
Compare Nitecore E4K with similar lights
More
Sources
- Emisar D1K: specs from Emisar product page (manufacturer). Price $39.95 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- Nitecore E4K: specs from manufacturer published specs as listed by batteryjunction.com. No verified price yet.
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