Convoy M21B size & dimensions
Convoy M21B shown at true scale next to a 21700 cell. Add another light to compare.
Specs
| Convoy M21B Check price ↗ | |
| Length | 141.5 mm (5.57 in) |
| Head / width | 35.7 mm (1.41 in) |
| Body | 27.1 mm (1.07 in) |
| Weight | 120 g listed |
| Battery | 21700 |
| Max output | — |
| Throw | — |
| Type | EDC |
| Price | $48.99 at flashlightgo.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Output depends on LED option |
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Size in everyday terms
The Convoy M21B is 141.5 mm (5.57 in) long and 35.7 mm (1.41 in) across at its widest point. That is about 1.7 times the length of a credit card (85.6 mm), or about 2.8 AA batteries end to end (50.5 mm each). Its widest point is 11.4 mm wider than a US quarter (24.26 mm). Next to a phone the size of an iPhone 15 (147.6 mm tall) it is 96% as long.
How it ranks
Among the 136 EDC lights in our catalog, the Convoy M21B is the 123rd shortest.
Battery, output and weight
The Convoy M21B runs on a removable 21700 battery. Listed weight is 120 g. When we checked on Nov 4, 2026, it was $48.99 at flashlightgo.com.
Convoy M21B vs…
M21B FAQ
How big is the Convoy M21B?
The Convoy M21B is 141.5 mm (5.57 in) long and 35.7 mm (1.41 in) across at its widest point. That is about 1.7 times the length of a credit card (85.6 mm), or about 2.8 AA batteries end to end (50.5 mm each). Its widest point is 11.4 mm wider than a US quarter (24.26 mm). Next to a phone the size of an iPhone 15 (147.6 mm tall) it is 96% as long.
What battery does the Convoy M21B use?
The Convoy M21B runs on a removable 21700 battery.
More Convoy lights
See also: Best EDC flashlights
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.
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