Fenix E04R vs RovyVon E3 size comparison
The RovyVon E3 is 7.5 mm (0.30 in) longer than the Fenix E04R, and 3 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
The RovyVon E3 is 7.5 mm (0.30 in) longer than the Fenix E04R, and 3 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Fenix E04R Check price ↗ | RovyVon E3 Check price ↗ | |
| Length | 58.5 mm (2.30 in) | 66 mm (2.60 in)+7.5 mm |
| Head / width | 30 mm (1.18 in) | 27 mm (1.06 in)−3 mm |
| Thickness | 29.8 mm (1.17 in) | 13 mm (0.51 in)−16.8 mm |
| Weight | 41 g with battery | 32 g listed |
| Battery | Built-in | Built-in |
| Max output | 300 lm | 700 lm |
| Throw | 46 m | 70 m |
| Type | Keychain | Keychain |
| Price | $29.95 at fenixlighting.com, as of Nov 4, 2026 | $39.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced Listed 30.0 mm wide x 29.8 mm thick | batteryjunction.com sourced |
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E04R vs E3: how they differ
Size and weight
The Fenix E04R is the shorter light: 58.5 mm (2.30 in) against 66 mm (2.60 in), a difference of 7.5 mm (11%). At its widest point the RovyVon E3 is 3 mm slimmer (27 vs 30 mm). Weights are published on different bases (Fenix E04R: 41 g with battery; RovyVon E3: 32 g listed), so they are not directly comparable.
Brightness and throw
The RovyVon E3 is rated brighter: 700 lm maximum vs 300 lm for the Fenix E04R, 133% more. For beam distance the RovyVon E3 reaches further: 70 m vs 46 m rated throw (52% more).
Battery
Both run on a built-in rechargeable battery, so neither needs a separate battery.
Price
When we checked on Nov 4, 2026, the Fenix E04R was $29.95 at fenixlighting.com and the RovyVon E3 $39.95 at batteryjunction.com, so the Fenix E04R cost $10.00 less. Prices change often, so check the current price before you buy.
Type
Both are keychain lights in our catalog with a flat body.
Which should you buy?
Choose the Fenix E04R if you want a shorter light (7.5 mm shorter). Choose the RovyVon E3 if you want a slimmer profile (3 mm narrower), more output (700 lm vs 300 lm) and longer throw (70 m vs 46 m). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix E04R Check price ↗ RovyVon E3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
E04R vs E3 FAQ
Which is smaller, the Fenix E04R or the RovyVon E3?
The Fenix E04R is the shorter light: 58.5 mm (2.30 in) against 66 mm (2.60 in), a difference of 7.5 mm (11%). At its widest point the RovyVon E3 is 3 mm slimmer (27 vs 30 mm). Weights are published on different bases (Fenix E04R: 41 g with battery; RovyVon E3: 32 g listed), so they are not directly comparable.
Which is brighter, the Fenix E04R or the RovyVon E3?
The RovyVon E3 is rated brighter: 700 lm maximum vs 300 lm for the Fenix E04R, 133% more. For beam distance the RovyVon E3 reaches further: 70 m vs 46 m rated throw (52% more).
Which is cheaper, the Fenix E04R or the RovyVon E3?
When we checked on Nov 4, 2026, the Fenix E04R was $29.95 at fenixlighting.com and the RovyVon E3 $39.95 at batteryjunction.com, so the Fenix E04R cost $10.00 less. Prices change often, so check the current price before you buy.
Do the Fenix E04R and RovyVon E3 use the same battery?
Both run on a built-in rechargeable battery, so neither needs a separate battery.
Compare Fenix E04R with similar lights
Compare RovyVon E3 with similar lights
More
Sources
- Fenix E04R: specs from Fenix product page (manufacturer). Price $29.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- RovyVon E3: specs from manufacturer published specs as listed by batteryjunction.com. Price $39.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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