Sofirn SC33 vs Streamlight ProTac 2L-X USB size comparison
The Streamlight ProTac 2L-X USB is about the same length as the Sofirn SC33, and 5.1 mm narrower at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
The Streamlight ProTac 2L-X USB is about the same length as the Sofirn SC33, and 5.1 mm narrower at its widest point. Weights are published on different bases (with battery vs without battery), so compare them with care.
Dimensions
| Sofirn SC33 Check price ↗ | Streamlight ProTac 2L-X USB Check price ↗ | |
| Length | 131 mm (5.16 in) | 130.6 mm (5.14 in)−0.4 mm |
| Head / width | 32 mm (1.26 in) | 26.9 mm (1.06 in)−5.1 mm |
| Body | — | 23.9 mm (0.94 in) |
| Weight | 110 g without battery | 125 g with battery |
| Battery | 21700 | 18650 / 2x CR123A |
| Max output | 5,200 lm | 500 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | from $41.99 at flashlightgo.com, as of Nov 4, 2026 | $83.05 at batteryjunction.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Only head diameter listed | batteryjunction.com sourced |
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SC33 vs ProTac 2L-X USB: how they differ
Size and weight
The Sofirn SC33 and Streamlight ProTac 2L-X USB are the same length to within half a millimetre (131 mm (5.16 in)). At its widest point the Streamlight ProTac 2L-X USB is 5.1 mm slimmer (26.9 vs 32 mm). Weights are published on different bases (Sofirn SC33: 110 g without battery; Streamlight ProTac 2L-X USB: 125 g with battery), so they are not directly comparable.
Brightness and throw
The Sofirn SC33 is rated brighter: 5,200 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 940% more.
Battery
The Sofirn SC33 runs on a removable 21700 battery; the Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries. 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 Sofirn SC33 was from $41.99 at flashlightgo.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the Sofirn SC33 cost $41.06 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 Sofirn SC33 if you want more output (5,200 lm vs 500 lm). Choose the Streamlight ProTac 2L-X USB if you want a slimmer profile (5.1 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Sofirn SC33 Check price ↗ Streamlight ProTac 2L-X USB
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
SC33 vs ProTac 2L-X USB FAQ
Which is smaller, the Sofirn SC33 or the Streamlight ProTac 2L-X USB?
The Sofirn SC33 and Streamlight ProTac 2L-X USB are the same length to within half a millimetre (131 mm (5.16 in)). At its widest point the Streamlight ProTac 2L-X USB is 5.1 mm slimmer (26.9 vs 32 mm). Weights are published on different bases (Sofirn SC33: 110 g without battery; Streamlight ProTac 2L-X USB: 125 g with battery), so they are not directly comparable.
Which is brighter, the Sofirn SC33 or the Streamlight ProTac 2L-X USB?
The Sofirn SC33 is rated brighter: 5,200 lm maximum vs 500 lm for the Streamlight ProTac 2L-X USB, 940% more.
Which is cheaper, the Sofirn SC33 or the Streamlight ProTac 2L-X USB?
When we checked on Nov 4, 2026, the Sofirn SC33 was from $41.99 at flashlightgo.com and the Streamlight ProTac 2L-X USB $83.05 at batteryjunction.com, so the Sofirn SC33 cost $41.06 less. Prices change often, so check the current price before you buy.
Do the Sofirn SC33 and Streamlight ProTac 2L-X USB use the same battery?
The Sofirn SC33 runs on a removable 21700 battery; the Streamlight ProTac 2L-X USB runs on removable 18650 / 2x CR123A batteries. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Compare Sofirn SC33 with similar lights
Compare Streamlight ProTac 2L-X USB with similar lights
More
Sources
- Sofirn SC33: specs from manufacturer published specs as listed by flashlightgo.com. Drawing: outline from published specs. Price from $41.99 from flashlightgo.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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