Olight Seeker Ultra vs Wurkkos FC12C size comparison
The Wurkkos FC12C is 1.5 mm (0.06 in) shorter than the Olight Seeker Ultra, and 11 mm narrower at its widest point. Weights are published on different bases (listed (battery unspecified) vs with battery), so compare them with care.
The Wurkkos FC12C is 1.5 mm (0.06 in) shorter than the Olight Seeker Ultra, and 11 mm narrower at its widest point. Weights are published on different bases (listed (battery unspecified) vs with battery), so compare them with care.
Dimensions
| Olight Seeker Ultra Check price ↗ | Wurkkos FC12C Check price ↗ | |
| Length | 138 mm (5.43 in) | 136.5 mm (5.37 in)−1.5 mm |
| Head / width | 35 mm (1.38 in) | 24 mm (0.94 in)−11 mm |
| Body | 28 mm (1.10 in) | — |
| Weight | 220 g with battery | 85 g listed (battery unspecified) |
| Battery | 21700 | 21700 |
| Max output | 4,800 lm | — |
| Throw | 265 m | — |
| Type | EDC | EDC |
| Price | $169.99 at olight.com, as of Nov 4, 2026 | $35.99 at flashlightgo.com, as of Nov 4, 2026 |
| Source | olight.com sourced Body diameter and throw from Battery Junction | flashlightgo.com sourced Only head diameter listed |
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Seeker Ultra vs FC12C: how they differ
Size and weight
The Wurkkos FC12C is the shorter light: 136.5 mm (5.37 in) against 138 mm (5.43 in), a difference of 1.5 mm (1%). At its widest point the Wurkkos FC12C is 11 mm slimmer (24 vs 35 mm). Weights are published on different bases (Olight Seeker Ultra: 220 g with battery; Wurkkos FC12C: 85 g listed (battery unspecified)), so they are not directly comparable.
Brightness and throw
The Olight Seeker Ultra is rated at 4,800 lm; we have no published maximum for the Wurkkos FC12C.
Battery
Both run on a removable 21700 battery, so spare cells work in either light.
Price
When we checked on Nov 4, 2026, the Olight Seeker Ultra was $169.99 at olight.com and the Wurkkos FC12C $35.99 at flashlightgo.com, so the Wurkkos FC12C cost $134.00 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 Wurkkos FC12C if you want a slimmer profile (11 mm narrower). On the specs we track, the Wurkkos FC12C is ahead or level everywhere; the Olight Seeker Ultra 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 ↗ Olight Seeker Ultra Check price ↗ Wurkkos FC12C
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Seeker Ultra vs FC12C FAQ
Which is smaller, the Olight Seeker Ultra or the Wurkkos FC12C?
The Wurkkos FC12C is the shorter light: 136.5 mm (5.37 in) against 138 mm (5.43 in), a difference of 1.5 mm (1%). At its widest point the Wurkkos FC12C is 11 mm slimmer (24 vs 35 mm). Weights are published on different bases (Olight Seeker Ultra: 220 g with battery; Wurkkos FC12C: 85 g listed (battery unspecified)), so they are not directly comparable.
Which is cheaper, the Olight Seeker Ultra or the Wurkkos FC12C?
When we checked on Nov 4, 2026, the Olight Seeker Ultra was $169.99 at olight.com and the Wurkkos FC12C $35.99 at flashlightgo.com, so the Wurkkos FC12C cost $134.00 less. Prices change often, so check the current price before you buy.
Do the Olight Seeker Ultra and Wurkkos FC12C use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Olight Seeker Ultra with similar lights
Compare Wurkkos FC12C with similar lights
More
Sources
- Olight Seeker Ultra: specs from Olight product page (manufacturer). Price $169.99 from olight.com, checked Nov 4, 2026; prices change often.
- Wurkkos FC12C: specs from manufacturer published specs as listed by flashlightgo.com. Price $35.99 from flashlightgo.com, checked Nov 4, 2026; prices change often.
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