Sofirn SC18 vs Sofirn SC33 size comparison
The Sofirn SC33 is 29.5 mm (1.16 in) longer than the Sofirn SC18, and 7.3 mm wider at its widest point. It is 55 g heavier (without battery).
The Sofirn SC33 is 29.5 mm (1.16 in) longer than the Sofirn SC18, and 7.3 mm wider at its widest point. It is 55 g heavier (without battery).
Dimensions
| Sofirn SC18 Check price ↗ | Sofirn SC33 Check price ↗ | |
| Length | 101.5 mm (4.00 in) | 131 mm (5.16 in)+29.5 mm |
| Head / width | 24.7 mm (0.97 in) | 32 mm (1.26 in)+7.3 mm |
| Weight | 55 g without battery | 110 g without battery+55 g |
| Battery | 18650 | 21700 |
| Max output | — | 5,200 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | from $19.99 at flashlightgo.com, as of Nov 4, 2026 | from $41.99 at flashlightgo.com, as of Nov 4, 2026 |
| Source | flashlightgo.com sourced Only head diameter listed | flashlightgo.com sourced Only head diameter listed |
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SC18 vs SC33: how they differ
Size and weight
The Sofirn SC18 is the shorter light: 101.5 mm (4.00 in) against 131 mm (5.16 in), a difference of 29.5 mm (23%). At its widest point the Sofirn SC18 is 7.3 mm slimmer (24.7 vs 32 mm). The Sofirn SC18 is 55 g lighter (55 g vs 110 g, without battery).
Brightness and throw
The Sofirn SC33 is rated at 5,200 lm; we have no published maximum for the Sofirn SC18.
Battery
The Sofirn SC18 runs on a removable 18650 battery; the Sofirn SC33 runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Price
When we checked on Nov 4, 2026, the Sofirn SC18 was from $19.99 at flashlightgo.com and the Sofirn SC33 from $41.99 at flashlightgo.com, so the Sofirn SC18 cost $22.00 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 Sofirn SC18 if you want a shorter light (29.5 mm shorter), a slimmer profile (7.3 mm narrower) and less weight (55 g lighter). On the specs we track, the Sofirn SC18 is ahead or level everywhere; the Sofirn SC33 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 ↗ Sofirn SC18 Check price ↗ Sofirn SC33
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SC18 vs SC33 FAQ
Which is smaller, the Sofirn SC18 or the Sofirn SC33?
The Sofirn SC18 is the shorter light: 101.5 mm (4.00 in) against 131 mm (5.16 in), a difference of 29.5 mm (23%). At its widest point the Sofirn SC18 is 7.3 mm slimmer (24.7 vs 32 mm). The Sofirn SC18 is 55 g lighter (55 g vs 110 g, without battery).
Which is cheaper, the Sofirn SC18 or the Sofirn SC33?
When we checked on Nov 4, 2026, the Sofirn SC18 was from $19.99 at flashlightgo.com and the Sofirn SC33 from $41.99 at flashlightgo.com, so the Sofirn SC18 cost $22.00 less. Prices change often, so check the current price before you buy.
Do the Sofirn SC18 and Sofirn SC33 use the same battery?
The Sofirn SC18 runs on a removable 18650 battery; the Sofirn SC33 runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Compare Sofirn SC18 with similar lights
Compare Sofirn SC33 with similar lights
More
Sources
- Sofirn SC18: specs from manufacturer published specs as listed by flashlightgo.com. Price from $19.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
- Sofirn SC33: specs from manufacturer published specs as listed by flashlightgo.com. Price from $41.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
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