Nitecore P20iX vs RovyVon S3 Pro size comparison
The RovyVon S3 Pro is 22.5 mm (0.89 in) shorter than the Nitecore P20iX, and 2.8 mm narrower at its widest point. Weights are published on different bases (listed vs listed (battery unspecified)), so compare them with care.
The RovyVon S3 Pro is 22.5 mm (0.89 in) shorter than the Nitecore P20iX, and 2.8 mm narrower at its widest point. Weights are published on different bases (listed vs listed (battery unspecified)), so compare them with care.
Dimensions
| Nitecore P20iX Check price ↗ | RovyVon S3 Pro Check price ↗ | |
| Length | 141.5 mm (5.57 in) | 119 mm (4.69 in)−22.5 mm |
| Head / width | 31.8 mm (1.25 in) | 29 mm (1.14 in)−2.8 mm |
| Body | 25.4 mm (1.00 in) | 29 mm (1.14 in)+3.6 mm |
| Weight | 116 g listed (battery unspecified) | 150 g listed |
| Battery | 21700 | 18650 |
| Max output | 4,000 lm | 2,800 lm |
| Throw | — | 130 m |
| Type | EDC | EDC |
| Price | $119.95 at nitecorestore.com, as of Nov 4, 2026 | from $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | nitecorestore.com sourced Listed L-5.57" x W-1.25" x H-1.00", 4.09 oz; converted | batteryjunction.com sourced |
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P20iX vs S3 Pro: how they differ
Size and weight
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 141.5 mm (5.57 in), a difference of 22.5 mm (16%). At its widest point the RovyVon S3 Pro is 2.8 mm slimmer (29 vs 31.8 mm). Weights are published on different bases (Nitecore P20iX: 116 g listed (battery unspecified); RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Brightness and throw
The Nitecore P20iX is rated brighter: 4,000 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 43% more.
Battery
The Nitecore P20iX 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 Nitecore P20iX was $119.95 at nitecorestore.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 Nitecore P20iX if you want more output (4,000 lm vs 2,800 lm). Choose the RovyVon S3 Pro if you want a shorter light (22.5 mm shorter) and a slimmer profile (2.8 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Nitecore P20iX Check price ↗ RovyVon S3 Pro
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P20iX vs S3 Pro FAQ
Which is smaller, the Nitecore P20iX or the RovyVon S3 Pro?
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 141.5 mm (5.57 in), a difference of 22.5 mm (16%). At its widest point the RovyVon S3 Pro is 2.8 mm slimmer (29 vs 31.8 mm). Weights are published on different bases (Nitecore P20iX: 116 g listed (battery unspecified); RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Which is brighter, the Nitecore P20iX or the RovyVon S3 Pro?
The Nitecore P20iX is rated brighter: 4,000 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 43% more.
Which is cheaper, the Nitecore P20iX or the RovyVon S3 Pro?
When we checked on Nov 4, 2026, the Nitecore P20iX was $119.95 at nitecorestore.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 Nitecore P20iX and RovyVon S3 Pro use the same battery?
The Nitecore P20iX 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 Nitecore P20iX with similar lights
Compare RovyVon S3 Pro with similar lights
More
Sources
- Nitecore P20iX: specs from manufacturer published specs as listed by nitecorestore.com. Drawing: outline from published specs. Price $119.95 from nitecorestore.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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