Olight Seeker 3 vs Olight Seeker 3 Pro size comparison
The Olight Seeker 3 Pro is 4 mm (0.16 in) longer than the Olight Seeker 3, with about the same max diameter/width. It is 16 g heavier (with battery).
The Olight Seeker 3 Pro is 4 mm (0.16 in) longer than the Olight Seeker 3, with about the same max diameter/width. It is 16 g heavier (with battery).
Dimensions
| Olight Seeker 3 Check price ↗ | Olight Seeker 3 Pro Check price ↗ | |
| Length | 128 mm (5.04 in) | 132 mm (5.20 in)+4 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 | 200 g with battery+16 g |
| Battery | 21700 | 21700 |
| Max output | 3,500 lm | 4,200 lm |
| Throw | 220 m | 250 m |
| Type | EDC | EDC not on olight.com (US) |
| Price | $119.95 at olight.com, as of Nov 4, 2026 | $139.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | olight.com sourced | batteryjunction.com sourced |
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Seeker 3 vs Seeker 3 Pro: how they differ
Size and weight
The Olight Seeker 3 is the shorter light: 128 mm (5.04 in) against 132 mm (5.20 in), a difference of 4 mm (3%). At their widest points they are about the same (35 vs 35 mm). The Olight Seeker 3 is 16 g lighter (184 g vs 200 g, with battery).
Brightness and throw
The Olight Seeker 3 Pro is rated brighter: 4,200 lm maximum vs 3,500 lm for the Olight Seeker 3, 20% more. For beam distance the Olight Seeker 3 Pro reaches further: 250 m vs 220 m rated throw (14% 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 was $119.95 at olight.com and the Olight Seeker 3 Pro $139.95 at batteryjunction.com, so the Olight Seeker 3 cost $20.00 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 Olight Seeker 3 if you want a shorter light (4 mm shorter) and less weight (16 g lighter). Choose the Olight Seeker 3 Pro if you want more output (4,200 lm vs 3,500 lm) and longer throw (250 m vs 220 m). 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 3 Pro
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Seeker 3 vs Seeker 3 Pro FAQ
Which is smaller, the Olight Seeker 3 or the Olight Seeker 3 Pro?
The Olight Seeker 3 is the shorter light: 128 mm (5.04 in) against 132 mm (5.20 in), a difference of 4 mm (3%). At their widest points they are about the same (35 vs 35 mm). The Olight Seeker 3 is 16 g lighter (184 g vs 200 g, with battery).
Which is brighter, the Olight Seeker 3 or the Olight Seeker 3 Pro?
The Olight Seeker 3 Pro is rated brighter: 4,200 lm maximum vs 3,500 lm for the Olight Seeker 3, 20% more. For beam distance the Olight Seeker 3 Pro reaches further: 250 m vs 220 m rated throw (14% more).
Which is cheaper, the Olight Seeker 3 or the Olight Seeker 3 Pro?
When we checked on Nov 4, 2026, the Olight Seeker 3 was $119.95 at olight.com and the Olight Seeker 3 Pro $139.95 at batteryjunction.com, so the Olight Seeker 3 cost $20.00 less. Prices change often, so check the current price before you buy.
Do the Olight Seeker 3 and Olight Seeker 3 Pro 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 3 Pro 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 3 Pro: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $139.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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