Olight Seeker 3 vs Olight Seeker 4 size comparison
The Olight Seeker 4 is 6 mm (0.24 in) longer than the Olight Seeker 3, with about the same max diameter/width. It is 21 g heavier (with battery).
The Olight Seeker 4 is 6 mm (0.24 in) longer than the Olight Seeker 3, with about the same max diameter/width. It is 21 g heavier (with battery).
Dimensions
| Olight Seeker 3 Check price ↗ | Olight Seeker 4 Check price ↗ | |
| Length | 128 mm (5.04 in) | 134 mm (5.28 in)+6 mm |
| Head / width | 35 mm (1.38 in) | 35 mm (1.38 in)same |
| Body | 27.5 mm (1.08 in) | 28 mm (1.10 in)+0.5 mm |
| Weight | 184 g with battery | 205 g with battery+21 g |
| Battery | 21700 | 21700 |
| Max output | 3,500 lm | 3,100 lm |
| Throw | 220 m | — |
| Type | EDC | EDC not on olight.com (US) |
| Price | $119.95 at olight.com, as of Nov 4, 2026 | not verified yet |
| Source | olight.com sourced | batteryjunction.com sourced Retailer lists 400 m throw, which conflicts with Olight figures for the series; throw omitted |
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Seeker 3 vs Seeker 4: how they differ
Size and weight
The Olight Seeker 3 is the shorter light: 128 mm (5.04 in) against 134 mm (5.28 in), a difference of 6 mm (4%). At their widest points they are about the same (35 vs 35 mm). The Olight Seeker 3 is 21 g lighter (184 g vs 205 g, with battery).
Brightness and throw
The Olight Seeker 3 is rated brighter: 3,500 lm maximum vs 3,100 lm for the Olight Seeker 4, 13% more.
Battery
Both run on a removable 21700 battery, so spare cells work in either light.
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the Olight Seeker 3 if you want a shorter light (6 mm shorter), less weight (21 g lighter) and more output (3,500 lm vs 3,100 lm). On the specs we track, the Olight Seeker 3 is ahead or level everywhere; the Olight Seeker 4 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 3 Check price ↗ Olight Seeker 4
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Seeker 3 vs Seeker 4 FAQ
Which is smaller, the Olight Seeker 3 or the Olight Seeker 4?
The Olight Seeker 3 is the shorter light: 128 mm (5.04 in) against 134 mm (5.28 in), a difference of 6 mm (4%). At their widest points they are about the same (35 vs 35 mm). The Olight Seeker 3 is 21 g lighter (184 g vs 205 g, with battery).
Which is brighter, the Olight Seeker 3 or the Olight Seeker 4?
The Olight Seeker 3 is rated brighter: 3,500 lm maximum vs 3,100 lm for the Olight Seeker 4, 13% more.
Do the Olight Seeker 3 and Olight Seeker 4 use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Olight Seeker 3 with similar lights
Compare Olight Seeker 4 with similar lights
More
Sources
- Olight Seeker 3: specs from Olight product page (manufacturer). Drawing: outline from published specs. Price $119.95 from olight.com, checked Nov 4, 2026; prices change often.
- Olight Seeker 4: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: shape measured from manufacturer photo (batteryjunction.com), scaled to the published length and diameter. No verified price yet.
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