Olight Seeker 3 Pro vs Olight Seeker 4 Pro size comparison
The Olight Seeker 4 Pro is 1 mm (0.04 in) longer than the Olight Seeker 3 Pro, with about the same max diameter/width. It is 5 g heavier (with battery).
The Olight Seeker 4 Pro is 1 mm (0.04 in) longer than the Olight Seeker 3 Pro, with about the same max diameter/width. It is 5 g heavier (with battery).
Dimensions
| Olight Seeker 3 Pro Check price ↗ | Olight Seeker 4 Pro Check price ↗ | |
| Length | 132 mm (5.20 in) | 133 mm (5.24 in)+1 mm |
| Head / width | 35 mm (1.38 in) | 35 mm (1.38 in)same |
| Body | 28 mm (1.10 in) | 28 mm (1.10 in)same |
| Weight | 200 g with battery | 205 g with battery+5 g |
| Battery | 21700 | 21700 |
| Max output | 4,200 lm | 4,600 lm |
| Throw | 250 m | 260 m |
| Type | EDC not on olight.com (US) | EDC |
| Price | $139.95 at batteryjunction.com, as of Nov 4, 2026 | $139.99 at olight.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | olight.com sourced |
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Seeker 3 Pro vs Seeker 4 Pro: how they differ
Size and weight
The Olight Seeker 3 Pro is the shorter light: 132 mm (5.20 in) against 133 mm (5.24 in), a difference of 1 mm (1%). At their widest points they are about the same (35 vs 35 mm). The Olight Seeker 3 Pro is 5 g lighter (200 g vs 205 g, with battery).
Brightness and throw
The Olight Seeker 4 Pro is rated brighter: 4,600 lm maximum vs 4,200 lm for the Olight Seeker 3 Pro, 10% more. For beam distance the Olight Seeker 4 Pro reaches further: 260 m vs 250 m rated throw (4% more).
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 3 Pro was $139.95 at batteryjunction.com and the Olight Seeker 4 Pro $139.99 at olight.com. 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?
On the specs we track, these two are closely matched, so decide on price, user interface and the features you care about. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Olight Seeker 3 Pro Check price ↗ Olight Seeker 4 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
Seeker 3 Pro vs Seeker 4 Pro FAQ
Which is smaller, the Olight Seeker 3 Pro or the Olight Seeker 4 Pro?
The Olight Seeker 3 Pro is the shorter light: 132 mm (5.20 in) against 133 mm (5.24 in), a difference of 1 mm (1%). At their widest points they are about the same (35 vs 35 mm). The Olight Seeker 3 Pro is 5 g lighter (200 g vs 205 g, with battery).
Which is brighter, the Olight Seeker 3 Pro or the Olight Seeker 4 Pro?
The Olight Seeker 4 Pro is rated brighter: 4,600 lm maximum vs 4,200 lm for the Olight Seeker 3 Pro, 10% more. For beam distance the Olight Seeker 4 Pro reaches further: 260 m vs 250 m rated throw (4% more).
Which is cheaper, the Olight Seeker 3 Pro or the Olight Seeker 4 Pro?
When we checked on Nov 4, 2026, the Olight Seeker 3 Pro was $139.95 at batteryjunction.com and the Olight Seeker 4 Pro $139.99 at olight.com. Prices change often, so check the current price before you buy.
Do the Olight Seeker 3 Pro and Olight Seeker 4 Pro use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Olight Seeker 3 Pro with similar lights
Compare Olight Seeker 4 Pro with similar lights
More
Sources
- Olight Seeker 3 Pro: specs from manufacturer published specs as listed by batteryjunction.com. Price $139.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- Olight Seeker 4 Pro: specs from Olight product page (manufacturer). Price $139.99 from olight.com, checked Nov 4, 2026; prices change often.
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