Convoy M21B vs Nitecore MT2A Pro size comparison
The Nitecore MT2A Pro is 1.5 mm (0.06 in) longer than the Convoy M21B, and 15.7 mm narrower at its widest point. Weights are published on different bases (listed vs listed), so compare them with care.
Nitecore MT2A Pro: Photo: Nitecore · Image policy
The Nitecore MT2A Pro is 1.5 mm (0.06 in) longer than the Convoy M21B, and 15.7 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 MT2A Pro Check price ↗ | |
| Length | 141.5 mm (5.57 in) | 143 mm (5.63 in)+1.5 mm |
| Head / width | 35.7 mm (1.41 in) | 20 mm (0.79 in)−15.7 mm |
| Body | 27.1 mm (1.07 in) | 17 mm (0.67 in)−10.1 mm |
| Weight | 120 g listed | 98 g listed |
| Battery | 21700 | 2x AA / NL1416R |
| Max output | — | 1,000 lm |
| Throw | — | 255 m |
| Type | EDC | EDC |
| Price | $48.99 at flashlightgo.com, as of Nov 4, 2026 | $44.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Output depends on LED option | batteryjunction.com sourced |
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M21B vs MT2A Pro: how they differ
Size and weight
The Convoy M21B is the shorter light: 141.5 mm (5.57 in) against 143 mm (5.63 in), a difference of 1.5 mm (1%). At its widest point the Nitecore MT2A Pro is 15.7 mm slimmer (20 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore MT2A Pro: 98 g listed), so they are not directly comparable.
Brightness and throw
The Nitecore MT2A Pro is rated at 1,000 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 MT2A Pro runs on removable 2x AA / NL1416R batteries. For scale, a 21700 cell is about 21 × 70 mm and a AA about 14.5 × 50.5 mm (nominal).
Price
When we checked on Nov 4, 2026, the Convoy M21B was $48.99 at flashlightgo.com and the Nitecore MT2A Pro $44.95 at batteryjunction.com, so the Nitecore MT2A Pro cost $4.04 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 Nitecore MT2A Pro if you want a slimmer profile (15.7 mm narrower). On the specs we track, the Nitecore MT2A Pro 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 ↗ Nitecore MT2A Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
M21B vs MT2A Pro FAQ
Which is smaller, the Convoy M21B or the Nitecore MT2A Pro?
The Convoy M21B is the shorter light: 141.5 mm (5.57 in) against 143 mm (5.63 in), a difference of 1.5 mm (1%). At its widest point the Nitecore MT2A Pro is 15.7 mm slimmer (20 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore MT2A Pro: 98 g listed), so they are not directly comparable.
Which is cheaper, the Convoy M21B or the Nitecore MT2A Pro?
When we checked on Nov 4, 2026, the Convoy M21B was $48.99 at flashlightgo.com and the Nitecore MT2A Pro $44.95 at batteryjunction.com, so the Nitecore MT2A Pro cost $4.04 less. Prices change often, so check the current price before you buy.
Do the Convoy M21B and Nitecore MT2A Pro use the same battery?
The Convoy M21B runs on a removable 21700 battery; the Nitecore MT2A Pro runs on removable 2x AA / NL1416R batteries. For scale, a 21700 cell is about 21 × 70 mm and a AA about 14.5 × 50.5 mm (nominal).
Compare Convoy M21B with similar lights
Compare Nitecore MT2A Pro 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 MT2A Pro: 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). Price $44.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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