Fenix E35R vs RovyVon S3 Pro size comparison

E35R vs S3 Pro: how they differ

Size and weight

The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 120 mm (4.72 in), a difference of 1 mm (1%). At its widest point the Fenix E35R is 2.5 mm slimmer (26.5 vs 29 mm). Weights are published on different bases (Fenix E35R: 148 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.

Brightness and throw

The Fenix E35R is rated brighter: 3,100 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 11% more. For beam distance the Fenix E35R reaches further: 260 m vs 130 m rated throw (100% more).

Battery

The Fenix E35R runs on a removable 21700 battery; the RovyVon S3 Pro runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).

Price

When we checked on Nov 4, 2026, the Fenix E35R was $79.95 at fenixlighting.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com. 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 Fenix E35R if you want a slimmer profile (2.5 mm narrower), more output (3,100 lm vs 2,800 lm) and longer throw (260 m vs 130 m). On the specs we track, the Fenix E35R is ahead or level everywhere; the RovyVon S3 Pro 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 ↗ Fenix E35R Check price ↗ RovyVon S3 Pro

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