Convoy S21E vs RovyVon E300S G2 size comparison
The RovyVon E300S G2 is 15.4 mm (0.61 in) shorter than the Convoy S21E, and 9.7 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The RovyVon E300S G2 is 15.4 mm (0.61 in) shorter than the Convoy S21E, and 9.7 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Convoy S21E Check price ↗ | RovyVon E300S G2 Check price ↗ | |
| Length | 116.4 mm (4.58 in) | 101 mm (3.98 in)−15.4 mm |
| Head / width | 27.3 mm (1.07 in) | 37 mm (1.46 in)+9.7 mm |
| Body | 27.3 mm (1.07 in) | — |
| Thickness | — | 17 mm (0.67 in) |
| Weight | 88 g without battery | 90 g listed |
| Battery | 21700 | Built-in |
| Max output | — | 2,400 lm |
| Throw | — | 130 m |
| Type | EDC | EDC |
| Price | from $27.99 at flashlightgo.com, as of Nov 4, 2026 | $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Output depends on LED option | batteryjunction.com sourced |
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S21E vs E300S G2: how they differ
Size and weight
The RovyVon E300S G2 is the shorter light: 101 mm (3.98 in) against 116.4 mm (4.58 in), a difference of 15.4 mm (13%). At its widest point the Convoy S21E is 9.7 mm slimmer (27.3 vs 37 mm). Weights are published on different bases (Convoy S21E: 88 g without battery; RovyVon E300S G2: 90 g listed), so they are not directly comparable.
Brightness and throw
The RovyVon E300S G2 is rated at 2,400 lm; we have no published maximum for the Convoy S21E. Output for the Convoy S21E depends on the LED option chosen.
Battery
The Convoy S21E runs on a removable 21700 battery; the RovyVon E300S G2 runs on a built-in rechargeable battery. Only the Convoy S21E lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Convoy S21E was from $27.99 at flashlightgo.com and the RovyVon E300S G2 $79.95 at batteryjunction.com, so the Convoy S21E cost $51.96 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Convoy S21E if you want a slimmer profile (9.7 mm narrower) and a removable cell you can swap. Choose the RovyVon E300S G2 if you want a shorter light (15.4 mm shorter) and a built-in battery with no separate cell to buy. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Convoy S21E Check price ↗ RovyVon E300S G2
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
S21E vs E300S G2 FAQ
Which is smaller, the Convoy S21E or the RovyVon E300S G2?
The RovyVon E300S G2 is the shorter light: 101 mm (3.98 in) against 116.4 mm (4.58 in), a difference of 15.4 mm (13%). At its widest point the Convoy S21E is 9.7 mm slimmer (27.3 vs 37 mm). Weights are published on different bases (Convoy S21E: 88 g without battery; RovyVon E300S G2: 90 g listed), so they are not directly comparable.
Which is cheaper, the Convoy S21E or the RovyVon E300S G2?
When we checked on Nov 4, 2026, the Convoy S21E was from $27.99 at flashlightgo.com and the RovyVon E300S G2 $79.95 at batteryjunction.com, so the Convoy S21E cost $51.96 less. Prices change often, so check the current price before you buy.
Do the Convoy S21E and RovyVon E300S G2 use the same battery?
The Convoy S21E runs on a removable 21700 battery; the RovyVon E300S G2 runs on a built-in rechargeable battery. Only the Convoy S21E lets you swap in a charged spare.
Compare Convoy S21E with similar lights
Compare RovyVon E300S G2 with similar lights
More
Sources
- Convoy S21E: specs from manufacturer published specs as listed by flashlightgo.com. Price from $27.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
- RovyVon E300S G2: specs from manufacturer published specs as listed by batteryjunction.com. Price $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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