Acebeam E75 vs Convoy M21B size comparison
The Convoy M21B is 12.5 mm (0.49 in) longer than the Acebeam E75, and 0.7 mm wider at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
The Convoy M21B is 12.5 mm (0.49 in) longer than the Acebeam E75, and 0.7 mm wider at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Acebeam E75 Check price ↗ | Convoy M21B Check price ↗ | |
| Length | 129 mm (5.08 in) | 141.5 mm (5.57 in)+12.5 mm |
| Head / width | 35 mm (1.38 in) | 35.7 mm (1.41 in)+0.7 mm |
| Body | 28 mm (1.10 in) | 27.1 mm (1.07 in)−0.9 mm |
| Weight | 217 g with battery | 120 g listed |
| Battery | 21700 | 21700 |
| Max output | 4,000 lm | — |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $99.90 at acebeam.com, as of Nov 4, 2026 | $48.99 at flashlightgo.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | flashlightgo.com sourced Output depends on LED option |
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E75 vs M21B: how they differ
Size and weight
The Acebeam E75 is the shorter light: 129 mm (5.08 in) against 141.5 mm (5.57 in), a difference of 12.5 mm (9%). At its widest point the Acebeam E75 is 0.7 mm slimmer (35 vs 35.7 mm). Weights are published on different bases (Acebeam E75: 217 g with battery; Convoy M21B: 120 g listed), so they are not directly comparable.
Brightness and throw
The Acebeam E75 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 Acebeam E75 was $99.90 at acebeam.com and the Convoy M21B $48.99 at flashlightgo.com, so the Convoy M21B cost $50.91 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 Acebeam E75 if you want a shorter light (12.5 mm shorter). On the specs we track, the Acebeam E75 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 ↗ Acebeam E75 Check price ↗ Convoy M21B
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
E75 vs M21B FAQ
Which is smaller, the Acebeam E75 or the Convoy M21B?
The Acebeam E75 is the shorter light: 129 mm (5.08 in) against 141.5 mm (5.57 in), a difference of 12.5 mm (9%). At its widest point the Acebeam E75 is 0.7 mm slimmer (35 vs 35.7 mm). Weights are published on different bases (Acebeam E75: 217 g with battery; Convoy M21B: 120 g listed), so they are not directly comparable.
Which is cheaper, the Acebeam E75 or the Convoy M21B?
When we checked on Nov 4, 2026, the Acebeam E75 was $99.90 at acebeam.com and the Convoy M21B $48.99 at flashlightgo.com, so the Convoy M21B cost $50.91 less. Prices change often, so check the current price before you buy.
Do the Acebeam E75 and Convoy M21B use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Acebeam E75 with similar lights
Compare Convoy M21B with similar lights
More
Sources
- Acebeam E75: specs from Acebeam product page (manufacturer); manufacturer published specs as listed by batteryjunction.com. Price $99.90 from acebeam.com, checked Nov 4, 2026; prices change often.
- 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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