Convoy M21B vs Nitecore P20iX size comparison
The Nitecore P20iX is about the same length as the Convoy M21B, and 3.9 mm narrower at its widest point. Weights are published on different bases (listed (battery unspecified) vs listed), so compare them with care.
The Nitecore P20iX is about the same length as the Convoy M21B, and 3.9 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 P20iX Check price ↗ | |
| Length | 141.5 mm (5.57 in) | 141.5 mm (5.57 in)same |
| Head / width | 35.7 mm (1.41 in) | 31.8 mm (1.25 in)−3.9 mm |
| Body | 27.1 mm (1.07 in) | 25.4 mm (1.00 in)−1.7 mm |
| Weight | 120 g listed | 116 g listed (battery unspecified) |
| Battery | 21700 | 21700 |
| Max output | — | 4,000 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $48.99 at flashlightgo.com, as of Nov 4, 2026 | $119.95 at nitecorestore.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Output depends on LED option | nitecorestore.com sourced Listed L-5.57" x W-1.25" x H-1.00", 4.09 oz; converted |
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M21B vs P20iX: how they differ
Size and weight
The Convoy M21B and Nitecore P20iX are the same length to within half a millimetre (141.5 mm (5.57 in)). At its widest point the Nitecore P20iX is 3.9 mm slimmer (31.8 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore P20iX: 116 g listed (battery unspecified)), so they are not directly comparable.
Brightness and throw
The Nitecore P20iX is rated at 4,000 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 P20iX $119.95 at nitecorestore.com, so the Convoy M21B cost $70.96 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 P20iX if you want a slimmer profile (3.9 mm narrower). On the specs we track, the Nitecore P20iX 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 P20iX
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M21B vs P20iX FAQ
Which is smaller, the Convoy M21B or the Nitecore P20iX?
The Convoy M21B and Nitecore P20iX are the same length to within half a millimetre (141.5 mm (5.57 in)). At its widest point the Nitecore P20iX is 3.9 mm slimmer (31.8 vs 35.7 mm). Weights are published on different bases (Convoy M21B: 120 g listed; Nitecore P20iX: 116 g listed (battery unspecified)), so they are not directly comparable.
Which is cheaper, the Convoy M21B or the Nitecore P20iX?
When we checked on Nov 4, 2026, the Convoy M21B was $48.99 at flashlightgo.com and the Nitecore P20iX $119.95 at nitecorestore.com, so the Convoy M21B cost $70.96 less. Prices change often, so check the current price before you buy.
Do the Convoy M21B and Nitecore P20iX 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 P20iX 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 P20iX: specs from manufacturer published specs as listed by nitecorestore.com. Price $119.95 from nitecorestore.com, checked Nov 4, 2026; prices change often.
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