Convoy M21B vs Emisar D1K size comparison
The Emisar D1K is 27.5 mm (1.08 in) shorter than the Convoy M21B, and 0.7 mm narrower at its widest point. Weights are published on different bases (without battery vs listed), so compare them with care.
The Emisar D1K is 27.5 mm (1.08 in) shorter than the Convoy M21B, and 0.7 mm narrower at its widest point. Weights are published on different bases (without battery vs listed), so compare them with care.
Dimensions
| Convoy M21B Check price ↗ | Emisar D1K Check price ↗ | |
| Length | 141.5 mm (5.57 in) | 114 mm (4.49 in)−27.5 mm |
| Head / width | 35.7 mm (1.41 in) | 35 mm (1.38 in)−0.7 mm |
| Body | 27.1 mm (1.07 in) | 26.5 mm (1.04 in)−0.6 mm |
| Weight | 120 g listed | 89 g without battery |
| Battery | 21700 | 21700 |
| Max output | — | 1,200 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $48.99 at flashlightgo.com, as of Nov 4, 2026 | $39.95 at intl-outdoor.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Output depends on LED option | intl-outdoor.com sourced Pocket thrower; lumens for SFT-25 |
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M21B vs D1K: how they differ
Size and weight
The Emisar D1K is the shorter light: 114 mm (4.49 in) against 141.5 mm (5.57 in), a difference of 27.5 mm (19%). At its widest point the Emisar D1K is 0.7 mm slimmer (35 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Emisar D1K: 89 g without battery), so they are not directly comparable.
Brightness and throw
The Emisar D1K is rated at 1,200 lm; we have no published maximum for the Convoy M21B. Output for the Convoy M21B depends on the LED option chosen.
Battery
Both run on a removable 21700 battery, so spare cells work in either light.
Price
When we checked on Nov 4, 2026, the Convoy M21B was $48.99 at flashlightgo.com and the Emisar D1K $39.95 at intl-outdoor.com, so the Emisar D1K cost $9.04 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 D1K if you want a shorter light (27.5 mm shorter). On the specs we track, the Emisar D1K is ahead or level everywhere; the Convoy M21B 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 ↗ Convoy M21B Check price ↗ Emisar D1K
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M21B vs D1K FAQ
Which is smaller, the Convoy M21B or the Emisar D1K?
The Emisar D1K is the shorter light: 114 mm (4.49 in) against 141.5 mm (5.57 in), a difference of 27.5 mm (19%). At its widest point the Emisar D1K is 0.7 mm slimmer (35 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Emisar D1K: 89 g without battery), so they are not directly comparable.
Which is cheaper, the Convoy M21B or the Emisar D1K?
When we checked on Nov 4, 2026, the Convoy M21B was $48.99 at flashlightgo.com and the Emisar D1K $39.95 at intl-outdoor.com, so the Emisar D1K cost $9.04 less. Prices change often, so check the current price before you buy.
Do the Convoy M21B and Emisar D1K use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Convoy M21B with similar lights
Compare Emisar D1K with similar lights
More
Sources
- Convoy M21B: specs from manufacturer published specs as listed by flashlightgo.com. Drawing: outline from published specs. Price $48.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
- Emisar D1K: specs from Emisar product page (manufacturer). Drawing: outline from published specs. Price $39.95 from intl-outdoor.com, checked Nov 4, 2026; prices change often.
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