Emisar D1K vs Emisar D4S size comparison
The Emisar D4S is 9 mm (0.35 in) shorter than the Emisar D1K, and 4 mm wider at its widest point.
The Emisar D4S is 9 mm (0.35 in) shorter than the Emisar D1K, and 4 mm wider at its widest point.
Dimensions
| Emisar D1K Check price ↗ | Emisar D4S Check price ↗ | |
| Length | 114 mm (4.49 in) | 105 mm (4.13 in)−9 mm |
| Head / width | 35 mm (1.38 in) | 39 mm (1.54 in)+4 mm |
| Body | 26.5 mm (1.04 in) | 32 mm (1.26 in)+5.5 mm |
| Weight | 89 g without battery | — |
| Battery | 21700 | 26650 |
| Max output | 1,200 lm | 4,300 lm |
| Throw | — | — |
| 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 | nealsgadgets.com sourced |
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D1K vs D4S: how they differ
Size and weight
The Emisar D4S is the shorter light: 105 mm (4.13 in) against 114 mm (4.49 in), a difference of 9 mm (8%). At its widest point the Emisar D1K is 4 mm slimmer (35 vs 39 mm).
Brightness and throw
The Emisar D4S is rated brighter: 4,300 lm maximum vs 1,200 lm for the Emisar D1K, 258% more.
Battery
The Emisar D1K 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 D1K if you want a slimmer profile (4 mm narrower). Choose the Emisar D4S if you want a shorter light (9 mm shorter) and more output (4,300 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 ↗ Emisar D4S
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
D1K vs D4S FAQ
Which is smaller, the Emisar D1K or the Emisar D4S?
The Emisar D4S is the shorter light: 105 mm (4.13 in) against 114 mm (4.49 in), a difference of 9 mm (8%). At its widest point the Emisar D1K is 4 mm slimmer (35 vs 39 mm).
Which is brighter, the Emisar D1K or the Emisar D4S?
The Emisar D4S is rated brighter: 4,300 lm maximum vs 1,200 lm for the Emisar D1K, 258% more.
Do the Emisar D1K and Emisar D4S use the same battery?
The Emisar D1K 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 D1K with similar lights
Compare Emisar D4S 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.
- Emisar D4S: specs from manufacturer published specs as listed by nealsgadgets.com. No verified price yet.
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