Convoy M21B vs Nitecore EDC27 size comparison
The Nitecore EDC27 is 5.5 mm (0.22 in) shorter than the Convoy M21B, and 3.7 mm narrower at its widest point. Weights are published on different bases (listed vs listed), so compare them with care.
Nitecore EDC27: Photo: Nitecore · Image policy
The Nitecore EDC27 is 5.5 mm (0.22 in) shorter than the Convoy M21B, and 3.7 mm narrower at its widest point. Weights are published on different bases (listed vs listed), so compare them with care.
Dimensions
| Convoy M21B Check price ↗ | Nitecore EDC27 Check price ↗ | |
| Length | 141.5 mm (5.57 in) | 136 mm (5.35 in)−5.5 mm |
| Head / width | 35.7 mm (1.41 in) | 32 mm (1.26 in)−3.7 mm |
| Body | 27.1 mm (1.07 in) | — |
| Thickness | — | 21 mm (0.83 in) |
| Weight | 120 g listed | 124 g listed |
| Battery | 21700 | Built-in |
| Max output | — | 3,000 lm |
| Throw | — | 220 m |
| Type | EDC | EDC |
| Price | $48.99 at flashlightgo.com, as of Nov 4, 2026 | not verified yet |
| Source | flashlightgo.com sourced Output depends on LED option | batteryjunction.com sourced |
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M21B vs EDC27: how they differ
Size and weight
The Nitecore EDC27 is the shorter light: 136 mm (5.35 in) against 141.5 mm (5.57 in), a difference of 5.5 mm (4%). At its widest point the Nitecore EDC27 is 3.7 mm slimmer (32 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore EDC27: 124 g listed), so they are not directly comparable.
Brightness and throw
The Nitecore EDC27 is rated at 3,000 lm; we have no published maximum for the Convoy M21B. Output for the Convoy M21B depends on the LED option chosen.
Battery
The Convoy M21B runs on a removable 21700 battery; the Nitecore EDC27 runs on a built-in rechargeable battery. Only the Convoy M21B lets you swap in a charged spare.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Convoy M21B if you want a removable cell you can swap. Choose the Nitecore EDC27 if you want a shorter light (5.5 mm shorter), a slimmer profile (3.7 mm narrower) and a built-in battery with no separate cell to buy. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Convoy M21B Check price ↗ Nitecore EDC27
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
M21B vs EDC27 FAQ
Which is smaller, the Convoy M21B or the Nitecore EDC27?
The Nitecore EDC27 is the shorter light: 136 mm (5.35 in) against 141.5 mm (5.57 in), a difference of 5.5 mm (4%). At its widest point the Nitecore EDC27 is 3.7 mm slimmer (32 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore EDC27: 124 g listed), so they are not directly comparable.
Do the Convoy M21B and Nitecore EDC27 use the same battery?
The Convoy M21B runs on a removable 21700 battery; the Nitecore EDC27 runs on a built-in rechargeable battery. Only the Convoy M21B lets you swap in a charged spare.
Compare Convoy M21B with similar lights
Compare Nitecore EDC27 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.
- Nitecore EDC27: specs from manufacturer published specs as listed by batteryjunction.com. Photo from manufacturer: the maker's own product photo with the background removed, scaled to the published length and diameter (Photo: Nitecore; image policy). No verified price yet.
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