Convoy M21B vs Nitecore MH12 Pro size comparison
The Nitecore MH12 Pro is 3.1 mm (0.12 in) shorter than the Convoy M21B, and 8.8 mm narrower at its widest point. Weights are published on different bases (listed (battery unspecified) vs listed), so compare them with care.
The Nitecore MH12 Pro is 3.1 mm (0.12 in) shorter than the Convoy M21B, and 8.8 mm narrower at its widest point. Weights are published on different bases (listed (battery unspecified) vs listed), so compare them with care.
Dimensions
| Convoy M21B Check price ↗ | Nitecore MH12 Pro Check price ↗ | |
| Length | 141.5 mm (5.57 in) | 138.4 mm (5.45 in)−3.1 mm |
| Head / width | 35.7 mm (1.41 in) | 26.9 mm (1.06 in)−8.8 mm |
| Body | 27.1 mm (1.07 in) | 25.9 mm (1.02 in)−1.2 mm |
| Weight | 120 g listed | 82 g listed (battery unspecified) |
| Battery | 21700 | 21700 |
| Max output | — | 3,300 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $48.99 at flashlightgo.com, as of Nov 4, 2026 | $89.95 at nitecorestore.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Output depends on LED option | nitecorestore.com sourced Listed L-5.45" x W-1.02" x H-1.06" (head 1.06", body 1.02"), 2.89 oz; converted |
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
M21B vs MH12 Pro: how they differ
Size and weight
The Nitecore MH12 Pro is the shorter light: 138.4 mm (5.45 in) against 141.5 mm (5.57 in), a difference of 3.1 mm (2%). At its widest point the Nitecore MH12 Pro is 8.8 mm slimmer (26.9 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore MH12 Pro: 82 g listed (battery unspecified)), so they are not directly comparable.
Brightness and throw
The Nitecore MH12 Pro is rated at 3,300 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 Nitecore MH12 Pro $89.95 at nitecorestore.com, so the Convoy M21B cost $40.96 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 MH12 Pro if you want a shorter light (3.1 mm shorter) and a slimmer profile (8.8 mm narrower). On the specs we track, the Nitecore MH12 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 MH12 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
M21B vs MH12 Pro FAQ
Which is smaller, the Convoy M21B or the Nitecore MH12 Pro?
The Nitecore MH12 Pro is the shorter light: 138.4 mm (5.45 in) against 141.5 mm (5.57 in), a difference of 3.1 mm (2%). At its widest point the Nitecore MH12 Pro is 8.8 mm slimmer (26.9 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore MH12 Pro: 82 g listed (battery unspecified)), so they are not directly comparable.
Which is cheaper, the Convoy M21B or the Nitecore MH12 Pro?
When we checked on Nov 4, 2026, the Convoy M21B was $48.99 at flashlightgo.com and the Nitecore MH12 Pro $89.95 at nitecorestore.com, so the Convoy M21B cost $40.96 less. Prices change often, so check the current price before you buy.
Do the Convoy M21B and Nitecore MH12 Pro 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 Nitecore MH12 Pro with similar lights
More
Sources
- Convoy M21B: specs from manufacturer published specs as listed by flashlightgo.com. Price $48.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
- Nitecore MH12 Pro: specs from manufacturer published specs as listed by nitecorestore.com. Price $89.95 from nitecorestore.com, checked Nov 4, 2026; prices change often.
Found an error? Email [email protected] and we will fix it.