Olight Seeker Ultra size & dimensions
Olight Seeker Ultra shown at true scale next to a 21700 cell. Add another light to compare.
Specs
| Olight Seeker Ultra Check price ↗ | |
| Length | 138 mm (5.43 in) |
| Head / width | 35 mm (1.38 in) |
| Body | 28 mm (1.10 in) |
| Weight | 220 g with battery |
| Battery | 21700 |
| Max output | 4,800 lm |
| Throw | 265 m |
| Type | EDC |
| Price | $169.99 at olight.com, as of Nov 4, 2026 |
| Source | olight.com sourced Body diameter and throw from Battery Junction |
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Size in everyday terms
The Olight Seeker Ultra is 138 mm (5.43 in) long and 35 mm (1.38 in) across at its widest point. That is about 1.6 times the length of a credit card (85.6 mm), or about 2.7 AA batteries end to end (50.5 mm each). Its widest point is 10.7 mm wider than a US quarter (24.26 mm). Next to a phone the size of an iPhone 15 (147.6 mm tall) it is 93% as long.
How it ranks
Among the 136 EDC lights in our catalog, the Olight Seeker Ultra is the 114th shortest, 5th brightest of 118 with a published output and 25th for throw of 81 with a published beam distance.
Battery, output and weight
The Olight Seeker Ultra runs on a removable 21700 battery. The manufacturer rates its maximum output at 4,800 lm and its throw at 265 m. Listed weight is 220 g (with battery). When we checked on Nov 4, 2026, it was $169.99 at olight.com.
Featured in: Best 21700 flashlights (#9), Brightest flashlights (#23).
Olight Seeker Ultra vs…
Seeker Ultra FAQ
How big is the Olight Seeker Ultra?
The Olight Seeker Ultra is 138 mm (5.43 in) long and 35 mm (1.38 in) across at its widest point. That is about 1.6 times the length of a credit card (85.6 mm), or about 2.7 AA batteries end to end (50.5 mm each). Its widest point is 10.7 mm wider than a US quarter (24.26 mm). Next to a phone the size of an iPhone 15 (147.6 mm tall) it is 93% as long.
What battery does the Olight Seeker Ultra use?
The Olight Seeker Ultra runs on a removable 21700 battery.
How bright is the Olight Seeker Ultra?
The manufacturer rates the Olight Seeker Ultra at 4,800 lm maximum output, with 265 m of throw.
More Olight lights
See also: Best EDC flashlights
Sources
- Olight Seeker Ultra: specs from Olight product page (manufacturer). Price $169.99 from olight.com, checked Nov 4, 2026; prices change often.
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