Olight Seeker 4 Pro vs Olight Seeker Ultra size comparison

Seeker 4 Pro vs Seeker Ultra: how they differ

Size and weight

The Olight Seeker 4 Pro is the shorter light: 133 mm (5.24 in) against 138 mm (5.43 in), a difference of 5 mm (4%). At their widest points they are about the same (35 vs 35 mm). The Olight Seeker 4 Pro is 15 g lighter (205 g vs 220 g, with battery).

Brightness and throw

The Olight Seeker Ultra is rated brighter: 4,800 lm maximum vs 4,600 lm for the Olight Seeker 4 Pro, 4% more. For beam distance the Olight Seeker Ultra reaches further: 265 m vs 260 m rated throw (2% 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 4 Pro was $139.99 at olight.com and the Olight Seeker Ultra $169.99 at olight.com, so the Olight Seeker 4 Pro cost $30.00 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 4 Pro if you want a shorter light (5 mm shorter) and less weight (15 g lighter). On the specs we track, the Olight Seeker 4 Pro is ahead or level everywhere; the Olight Seeker Ultra 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 4 Pro Check price ↗ Olight Seeker Ultra

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