Fenix E03R V2.0 vs Fenix E05R size comparison
The Fenix E05R is 15.5 mm (0.61 in) longer than the Fenix E03R V2.0, and 10.7 mm narrower at its widest point. It is 6 g lighter (with battery).
The Fenix E05R is 15.5 mm (0.61 in) longer than the Fenix E03R V2.0, and 10.7 mm narrower at its widest point. It is 6 g lighter (with battery).
Dimensions
| Fenix E03R V2.0 Check price ↗ | Fenix E05R Check price ↗ | |
| Length | 52.5 mm (2.07 in) | 68 mm (2.68 in)+15.5 mm |
| Head / width | 26 mm (1.02 in) | 15.3 mm (0.60 in)−10.7 mm |
| Body | — | 15 mm (0.59 in) |
| Thickness | 13 mm (0.51 in) | — |
| Weight | 30 g with battery | 24 g with battery−6 g |
| Battery | Built-in | Built-in |
| Max output | 500 lm | 400 lm |
| Throw | 90 m | 64 m |
| Type | Keychain | Keychain |
| Price | $29.95 at fenixlighting.com, as of Nov 4, 2026 | $29.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced Listed 26.0 mm wide x 13.0 mm thick | fenixlighting.com sourced |
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E03R V2.0 vs E05R: how they differ
Size and weight
The Fenix E03R V2.0 is the shorter light: 52.5 mm (2.07 in) against 68 mm (2.68 in), a difference of 15.5 mm (23%). At its widest point the Fenix E05R is 10.7 mm slimmer (15.3 vs 26 mm). The Fenix E05R is 6 g lighter (24 g vs 30 g, with battery).
Brightness and throw
The Fenix E03R V2.0 is rated brighter: 500 lm maximum vs 400 lm for the Fenix E05R, 25% more. For beam distance the Fenix E03R V2.0 reaches further: 90 m vs 64 m rated throw (41% 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 E03R V2.0 was $29.95 at fenixlighting.com and the Fenix E05R $29.95 at fenixlighting.com. Prices change often, so check the current price before you buy.
Type
Both are keychain lights in our catalog.
Which should you buy?
Choose the Fenix E03R V2.0 if you want a shorter light (15.5 mm shorter), more output (500 lm vs 400 lm) and longer throw (90 m vs 64 m). Choose the Fenix E05R if you want a slimmer profile (10.7 mm narrower) and less weight (6 g lighter). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix E03R V2.0 Check price ↗ Fenix E05R
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E03R V2.0 vs E05R FAQ
Which is smaller, the Fenix E03R V2.0 or the Fenix E05R?
The Fenix E03R V2.0 is the shorter light: 52.5 mm (2.07 in) against 68 mm (2.68 in), a difference of 15.5 mm (23%). At its widest point the Fenix E05R is 10.7 mm slimmer (15.3 vs 26 mm). The Fenix E05R is 6 g lighter (24 g vs 30 g, with battery).
Which is brighter, the Fenix E03R V2.0 or the Fenix E05R?
The Fenix E03R V2.0 is rated brighter: 500 lm maximum vs 400 lm for the Fenix E05R, 25% more. For beam distance the Fenix E03R V2.0 reaches further: 90 m vs 64 m rated throw (41% more).
Which is cheaper, the Fenix E03R V2.0 or the Fenix E05R?
When we checked on Nov 4, 2026, the Fenix E03R V2.0 was $29.95 at fenixlighting.com and the Fenix E05R $29.95 at fenixlighting.com. Prices change often, so check the current price before you buy.
Do the Fenix E03R V2.0 and Fenix E05R use the same battery?
Both run on a built-in rechargeable battery, so neither needs a separate battery.
Compare Fenix E03R V2.0 with similar lights
Compare Fenix E05R with similar lights
More
Sources
- Fenix E03R V2.0: specs from Fenix product page (manufacturer). Price $29.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Fenix E05R: specs from Fenix product page (manufacturer). Price $29.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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