Olight i3E EOS vs RovyVon Aurora A4 Pro Ti size comparison
The RovyVon Aurora A4 Pro Ti is 3.2 mm (0.13 in) shorter than the Olight i3E EOS, and 1.6 mm wider at its widest point. Weights are published on different bases (listed vs listed), so compare them with care.
The RovyVon Aurora A4 Pro Ti is 3.2 mm (0.13 in) shorter than the Olight i3E EOS, and 1.6 mm wider at its widest point. Weights are published on different bases (listed vs listed), so compare them with care.
Dimensions
| Olight i3E EOS Check price ↗ | RovyVon Aurora A4 Pro Ti Check price ↗ | |
| Length | 60.5 mm (2.38 in) | 57.3 mm (2.26 in)−3.2 mm |
| Head / width | 14 mm (0.55 in) | 15.6 mm (0.61 in)+1.6 mm |
| Body | 12.5 mm (0.49 in) | 15.6 mm (0.61 in)+3.1 mm |
| Weight | 19.4 g listed | 24 g listed |
| Battery | AAA | Built-in |
| Max output | 90 lm | 650 lm |
| Throw | — | — |
| Type | Keychain | Keychain |
| Price | $15.99 at olight.com, as of Nov 4, 2026 | not verified yet |
| Source | olight.com sourced | adventurecarry.com unverified Retailer lists 57.3 mm; another source says 60.5 mm for G4; re-check |
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i3E EOS vs Aurora A4 Pro Ti: how they differ
Size and weight
The RovyVon Aurora A4 Pro Ti is the shorter light: 57.3 mm (2.26 in) against 60.5 mm (2.38 in), a difference of 3.2 mm (5%). At its widest point the Olight i3E EOS is 1.6 mm slimmer (14 vs 15.6 mm). Weights are published on different bases (Olight i3E EOS: 19.4 g listed; RovyVon Aurora A4 Pro Ti: 24 g listed), so they are not directly comparable.
Brightness and throw
The RovyVon Aurora A4 Pro Ti is rated brighter: 650 lm maximum vs 90 lm for the Olight i3E EOS, 622% more.
Battery
The Olight i3E EOS runs on a removable AAA battery; the RovyVon Aurora A4 Pro Ti runs on a built-in rechargeable battery. Only the Olight i3E EOS lets you swap in a charged spare.
Type
Both are keychain lights in our catalog with a tube body.
Which should you buy?
Choose the Olight i3E EOS if you want a slimmer profile (1.6 mm narrower) and a removable cell you can swap. Choose the RovyVon Aurora A4 Pro Ti if you want a shorter light (3.2 mm shorter), more output (650 lm vs 90 lm) 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 ↗ Olight i3E EOS Check price ↗ RovyVon Aurora A4 Pro Ti
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
i3E EOS vs Aurora A4 Pro Ti FAQ
Which is smaller, the Olight i3E EOS or the RovyVon Aurora A4 Pro Ti?
The RovyVon Aurora A4 Pro Ti is the shorter light: 57.3 mm (2.26 in) against 60.5 mm (2.38 in), a difference of 3.2 mm (5%). At its widest point the Olight i3E EOS is 1.6 mm slimmer (14 vs 15.6 mm). Weights are published on different bases (Olight i3E EOS: 19.4 g listed; RovyVon Aurora A4 Pro Ti: 24 g listed), so they are not directly comparable.
Which is brighter, the Olight i3E EOS or the RovyVon Aurora A4 Pro Ti?
The RovyVon Aurora A4 Pro Ti is rated brighter: 650 lm maximum vs 90 lm for the Olight i3E EOS, 622% more.
Do the Olight i3E EOS and RovyVon Aurora A4 Pro Ti use the same battery?
The Olight i3E EOS runs on a removable AAA battery; the RovyVon Aurora A4 Pro Ti runs on a built-in rechargeable battery. Only the Olight i3E EOS lets you swap in a charged spare.
Compare Olight i3E EOS with similar lights
Compare RovyVon Aurora A4 Pro Ti with similar lights
More
Sources
- Olight i3E EOS: specs from Olight product page (manufacturer). Price $15.99 from olight.com, checked Nov 4, 2026; prices change often.
- RovyVon Aurora A4 Pro Ti: specs from manufacturer published specs as listed by adventurecarry.com. Some values could not be confirmed on a second source and are marked unverified. No verified price yet.
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