RovyVon S3 Pro vs Streamlight ProTac 2L-X USB size comparison
The Streamlight ProTac 2L-X USB is 11.6 mm (0.45 in) longer than the RovyVon S3 Pro, and 2.1 mm narrower at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
The Streamlight ProTac 2L-X USB is 11.6 mm (0.45 in) longer than the RovyVon S3 Pro, and 2.1 mm narrower at its widest point. Weights are published on different bases (with battery vs listed), so compare them with care.
Dimensions
| RovyVon S3 Pro Check price ↗ | Streamlight ProTac 2L-X USB Check price ↗ | |
| Length | 119 mm (4.69 in) | 130.6 mm (5.14 in)+11.6 mm |
| Head / width | 29 mm (1.14 in) | 26.9 mm (1.06 in)−2.1 mm |
| Body | 29 mm (1.14 in) | 23.9 mm (0.94 in)−5.1 mm |
| Weight | 150 g listed | 125 g with battery |
| Battery | 18650 | 18650 / 2x CR123A |
| Max output | 2,800 lm | 500 lm |
| Throw | 130 m | — |
| Type | EDC | EDC |
| Price | from $79.95 at batteryjunction.com, as of Nov 4, 2026 | $83.05 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | batteryjunction.com sourced |
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S3 Pro vs ProTac 2L-X USB: how they differ
Size and weight
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 130.6 mm (5.14 in), a difference of 11.6 mm (9%). At its widest point the Streamlight ProTac 2L-X USB is 2.1 mm slimmer (26.9 vs 29 mm). Weights are published on different bases (RovyVon S3 Pro: 150 g listed; Streamlight ProTac 2L-X USB: 125 g with battery), so they are not directly comparable.
Brightness and throw
The RovyVon S3 Pro is rated brighter: 2,800 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 460% more.
Battery
The RovyVon S3 Pro runs on a removable 18650 battery; the Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries.
Price
When we checked on Nov 4, 2026, the RovyVon S3 Pro was from $79.95 at batteryjunction.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the RovyVon S3 Pro cost $3.10 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 RovyVon S3 Pro if you want a shorter light (11.6 mm shorter) and more output (2,800 lm vs 500 lm). Choose the Streamlight ProTac 2L-X USB if you want a slimmer profile (2.1 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ RovyVon S3 Pro Check price ↗ Streamlight ProTac 2L-X USB
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S3 Pro vs ProTac 2L-X USB FAQ
Which is smaller, the RovyVon S3 Pro or the Streamlight ProTac 2L-X USB?
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 130.6 mm (5.14 in), a difference of 11.6 mm (9%). At its widest point the Streamlight ProTac 2L-X USB is 2.1 mm slimmer (26.9 vs 29 mm). Weights are published on different bases (RovyVon S3 Pro: 150 g listed; Streamlight ProTac 2L-X USB: 125 g with battery), so they are not directly comparable.
Which is brighter, the RovyVon S3 Pro or the Streamlight ProTac 2L-X USB?
The RovyVon S3 Pro is rated brighter: 2,800 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 460% more.
Which is cheaper, the RovyVon S3 Pro or the Streamlight ProTac 2L-X USB?
When we checked on Nov 4, 2026, the RovyVon S3 Pro was from $79.95 at batteryjunction.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the RovyVon S3 Pro cost $3.10 less. Prices change often, so check the current price before you buy.
Do the RovyVon S3 Pro and Streamlight ProTac 2L-X USB use the same battery?
The RovyVon S3 Pro runs on a removable 18650 battery; the Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries.
Compare RovyVon S3 Pro with similar lights
Compare Streamlight ProTac 2L-X USB with similar lights
More
Sources
- 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.
- Streamlight ProTac 2L-X USB: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $83.05 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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