Emisar D4K vs Wurkkos FC11C size comparison
The Wurkkos FC11C is 13.2 mm (0.52 in) longer than the Emisar D4K, and 1 mm narrower at its widest point. It is 7 g heavier (without battery).
The Wurkkos FC11C is 13.2 mm (0.52 in) longer than the Emisar D4K, and 1 mm narrower at its widest point. It is 7 g heavier (without battery).
Dimensions
| Emisar D4K Check price ↗ | Wurkkos FC11C Check price ↗ | |
| Length | 103 mm (4.06 in) | 116.2 mm (4.58 in)+13.2 mm |
| Head / width | 28 mm (1.10 in) | 27 mm (1.06 in)−1 mm |
| Body | 26.5 mm (1.04 in) | — |
| Weight | 58 g without battery | 65 g without battery+7 g |
| Battery | 21700 | 18650 |
| Max output | — | 1,200 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $39.69 at intl-outdoor.com, as of Nov 4, 2026 | $23.99 at flashlightgo.com, as of Nov 4, 2026 |
| Source | intl-outdoor.com sourced Output depends on LED option | flashlightgo.com sourced Only head diameter listed |
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D4K vs FC11C: how they differ
Size and weight
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 116.2 mm (4.58 in), a difference of 13.2 mm (11%). At its widest point the Wurkkos FC11C is 1 mm slimmer (27 vs 28 mm). The Emisar D4K is 7 g lighter (58 g vs 65 g, without battery).
Brightness and throw
The Wurkkos FC11C 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 Wurkkos FC11C runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Price
When we checked on Nov 4, 2026, the Emisar D4K was $39.69 at intl-outdoor.com and the Wurkkos FC11C $23.99 at flashlightgo.com, so the Wurkkos FC11C cost $15.70 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the Emisar D4K if you want a shorter light (13.2 mm shorter) and less weight (7 g lighter). On the specs we track, the Emisar D4K is ahead or level everywhere; the Wurkkos FC11C 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 ↗ Wurkkos FC11C
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D4K vs FC11C FAQ
Which is smaller, the Emisar D4K or the Wurkkos FC11C?
The Emisar D4K is the shorter light: 103 mm (4.06 in) against 116.2 mm (4.58 in), a difference of 13.2 mm (11%). At its widest point the Wurkkos FC11C is 1 mm slimmer (27 vs 28 mm). The Emisar D4K is 7 g lighter (58 g vs 65 g, without battery).
Which is cheaper, the Emisar D4K or the Wurkkos FC11C?
When we checked on Nov 4, 2026, the Emisar D4K was $39.69 at intl-outdoor.com and the Wurkkos FC11C $23.99 at flashlightgo.com, so the Wurkkos FC11C cost $15.70 less. Prices change often, so check the current price before you buy.
Do the Emisar D4K and Wurkkos FC11C use the same battery?
The Emisar D4K runs on a removable 21700 battery; the Wurkkos FC11C runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Compare Emisar D4K with similar lights
Compare Wurkkos FC11C with similar lights
More
Sources
- Emisar D4K: specs from Emisar product page (manufacturer). Drawing: outline from published specs. Price $39.69 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
- Wurkkos FC11C: specs from manufacturer published specs as listed by flashlightgo.com. Drawing: shape measured from manufacturer photo (flashlightgo.com), scaled to the published length and diameter. Price $23.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
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