Fenix PD40R V3.0 vs RovyVon S3 Pro size comparison
The RovyVon S3 Pro is 24 mm (0.94 in) shorter than the Fenix PD40R V3.0, and 5 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
The RovyVon S3 Pro is 24 mm (0.94 in) shorter than the Fenix PD40R V3.0, and 5 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Fenix PD40R V3.0 Check price ↗ | RovyVon S3 Pro Check price ↗ | |
| Length | 143 mm (5.63 in) | 119 mm (4.69 in)−24 mm |
| Head / width | 34 mm (1.34 in) | 29 mm (1.14 in)−5 mm |
| Body | 26 mm (1.02 in) | 29 mm (1.14 in)+3 mm |
| Weight | 198 g with battery | 150 g listed |
| Battery | 21700 | 18650 |
| Max output | 3,000 lm | 2,800 lm |
| Throw | 500 m | 130 m |
| Type | EDC | EDC |
| Price | $119.95 at fenixlighting.com, as of Nov 4, 2026 | from $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced |
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PD40R V3.0 vs S3 Pro: how they differ
Size and weight
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 143 mm (5.63 in), a difference of 24 mm (17%). At its widest point the RovyVon S3 Pro is 5 mm slimmer (29 vs 34 mm). Weights are published on different bases (Fenix PD40R V3.0: 198 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Brightness and throw
The Fenix PD40R V3.0 is rated brighter: 3,000 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 7% more. For beam distance the Fenix PD40R V3.0 reaches further: 500 m vs 130 m rated throw (285% more).
Battery
The Fenix PD40R V3.0 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 PD40R V3.0 was $119.95 at fenixlighting.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $40.00 less. 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 PD40R V3.0 if you want longer throw (500 m vs 130 m). Choose the RovyVon S3 Pro if you want a shorter light (24 mm shorter) and a slimmer profile (5 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix PD40R V3.0 Check price ↗ RovyVon S3 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
PD40R V3.0 vs S3 Pro FAQ
Which is smaller, the Fenix PD40R V3.0 or the RovyVon S3 Pro?
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 143 mm (5.63 in), a difference of 24 mm (17%). At its widest point the RovyVon S3 Pro is 5 mm slimmer (29 vs 34 mm). Weights are published on different bases (Fenix PD40R V3.0: 198 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Which is brighter, the Fenix PD40R V3.0 or the RovyVon S3 Pro?
The Fenix PD40R V3.0 is rated brighter: 3,000 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 7% more. For beam distance the Fenix PD40R V3.0 reaches further: 500 m vs 130 m rated throw (285% more).
Which is cheaper, the Fenix PD40R V3.0 or the RovyVon S3 Pro?
When we checked on Nov 4, 2026, the Fenix PD40R V3.0 was $119.95 at fenixlighting.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $40.00 less. Prices change often, so check the current price before you buy.
Do the Fenix PD40R V3.0 and RovyVon S3 Pro use the same battery?
The Fenix PD40R V3.0 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).
Compare Fenix PD40R V3.0 with similar lights
Compare RovyVon S3 Pro with similar lights
More
Sources
- Fenix PD40R V3.0: specs from Fenix product page (manufacturer). Drawing: shape measured from manufacturer photo (batteryjunction.com), scaled to the published length and diameter. Price $119.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- RovyVon S3 Pro: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price from $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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