Olight Seeker 3 vs Olight Seeker 4 Pro size comparison
The Olight Seeker 4 Pro is 5 mm (0.20 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 Pro is 5 mm (0.20 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 Pro Check price ↗ | |
| Length | 128 mm (5.04 in) | 133 mm (5.24 in)+5 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 | 4,600 lm |
| Throw | 220 m | 260 m |
| Type | EDC | EDC |
| Price | $119.95 at olight.com, as of Nov 4, 2026 | $139.99 at olight.com, as of Nov 4, 2026 |
| Source | olight.com sourced | olight.com sourced |
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
Seeker 3 vs Seeker 4 Pro: how they differ
Size and weight
The Olight Seeker 3 is the shorter light: 128 mm (5.04 in) against 133 mm (5.24 in), a difference of 5 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 4 Pro is rated brighter: 4,600 lm maximum vs 3,500 lm for the Olight Seeker 3, 31% more. For beam distance the Olight Seeker 4 Pro reaches further: 260 m vs 220 m rated throw (18% 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 4 Pro $139.99 at olight.com, so the Olight Seeker 3 cost $20.04 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 (5 mm shorter) and less weight (21 g lighter). Choose the Olight Seeker 4 Pro if you want more output (4,600 lm vs 3,500 lm) and longer throw (260 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 4 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
Seeker 3 vs Seeker 4 Pro FAQ
Which is smaller, the Olight Seeker 3 or the Olight Seeker 4 Pro?
The Olight Seeker 3 is the shorter light: 128 mm (5.04 in) against 133 mm (5.24 in), a difference of 5 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 Pro?
The Olight Seeker 4 Pro is rated brighter: 4,600 lm maximum vs 3,500 lm for the Olight Seeker 3, 31% more. For beam distance the Olight Seeker 4 Pro reaches further: 260 m vs 220 m rated throw (18% more).
Which is cheaper, the Olight Seeker 3 or the Olight Seeker 4 Pro?
When we checked on Nov 4, 2026, the Olight Seeker 3 was $119.95 at olight.com and the Olight Seeker 4 Pro $139.99 at olight.com, so the Olight Seeker 3 cost $20.04 less. Prices change often, so check the current price before you buy.
Do the Olight Seeker 3 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 with similar lights
Compare Olight Seeker 4 Pro with similar lights
More
Sources
- Olight Seeker 3: specs from Olight product page (manufacturer). Price $119.95 from olight.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.
Found an error? Email [email protected] and we will fix it.