Emisar D4K vs Emisar D4S size comparison
The Emisar D4S is 2 mm (0.08 in) longer than the Emisar D4K, and 11 mm wider at its widest point.
The Emisar D4S is 2 mm (0.08 in) longer than the Emisar D4K, and 11 mm wider at its widest point.
Dimensions
| Emisar D4K Check price ↗ | Emisar D4S Check price ↗ | |
| Length | 103 mm (4.06 in) | 105 mm (4.13 in)+2 mm |
| Head / width | 28 mm (1.10 in) | 39 mm (1.54 in)+11 mm |
| Body | 26.5 mm (1.04 in) | 32 mm (1.26 in)+5.5 mm |
| Weight | 58 g without battery | — |
| Battery | 21700 | 26650 |
| Max output | — | 4,300 lm |
| Throw | — | — |
| 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 | nealsgadgets.com sourced |
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D4K vs D4S: how they differ
Size and weight
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 105 mm (4.13 in), a difference of 2 mm (2%). At its widest point the Emisar D4K is 11 mm slimmer (28 vs 39 mm).
Brightness and throw
The Emisar D4S is rated at 4,300 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 Emisar D4S runs on a removable 26650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 26650 about 26 × 65 mm (nominal).
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the Emisar D4K if you want a slimmer profile (11 mm narrower). On the specs we track, the Emisar D4K is ahead or level everywhere; the Emisar D4S makes sense mainly if its price, interface or a feature we don't track suits you better. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Emisar D4K Check price ↗ Emisar D4S
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D4K vs D4S FAQ
Which is smaller, the Emisar D4K or the Emisar D4S?
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 105 mm (4.13 in), a difference of 2 mm (2%). At its widest point the Emisar D4K is 11 mm slimmer (28 vs 39 mm).
Do the Emisar D4K and Emisar D4S use the same battery?
The Emisar D4K runs on a removable 21700 battery; the Emisar D4S runs on a removable 26650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 26650 about 26 × 65 mm (nominal).
Compare Emisar D4K with similar lights
Compare Emisar D4S 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.
- Emisar D4S: specs from manufacturer published specs as listed by nealsgadgets.com. No verified price yet.
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