Olight Seeker 3 Pro vs RovyVon S3 Pro size comparison
The RovyVon S3 Pro is 13 mm (0.51 in) shorter than the Olight Seeker 3 Pro, and 6 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
The RovyVon S3 Pro is 13 mm (0.51 in) shorter than the Olight Seeker 3 Pro, and 6 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Olight Seeker 3 Pro Check price ↗ | RovyVon S3 Pro Check price ↗ | |
| Length | 132 mm (5.20 in) | 119 mm (4.69 in)−13 mm |
| Head / width | 35 mm (1.38 in) | 29 mm (1.14 in)−6 mm |
| Body | 28 mm (1.10 in) | 29 mm (1.14 in)+1 mm |
| Weight | 200 g with battery | 150 g listed |
| Battery | 21700 | 18650 |
| Max output | 4,200 lm | 2,800 lm |
| Throw | 250 m | 130 m |
| Type | EDC not on olight.com (US) | EDC |
| Price | $139.95 at batteryjunction.com, as of Nov 4, 2026 | from $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | batteryjunction.com sourced |
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
Seeker 3 Pro vs S3 Pro: how they differ
Size and weight
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 132 mm (5.20 in), a difference of 13 mm (10%). At its widest point the RovyVon S3 Pro is 6 mm slimmer (29 vs 35 mm). Weights are published on different bases (Olight Seeker 3 Pro: 200 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Brightness and throw
The Olight Seeker 3 Pro is rated brighter: 4,200 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 50% more. For beam distance the Olight Seeker 3 Pro reaches further: 250 m vs 130 m rated throw (92% more).
Battery
The Olight Seeker 3 Pro runs on a removable 21700 battery; the RovyVon S3 Pro runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Price
When we checked on Nov 4, 2026, the Olight Seeker 3 Pro was $139.95 at batteryjunction.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $60.00 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 Pro if you want more output (4,200 lm vs 2,800 lm) and longer throw (250 m vs 130 m). Choose the RovyVon S3 Pro if you want a shorter light (13 mm shorter) and a slimmer profile (6 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Olight Seeker 3 Pro Check price ↗ RovyVon S3 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
Seeker 3 Pro vs S3 Pro FAQ
Which is smaller, the Olight Seeker 3 Pro or the RovyVon S3 Pro?
The RovyVon S3 Pro is the shorter light: 119 mm (4.69 in) against 132 mm (5.20 in), a difference of 13 mm (10%). At its widest point the RovyVon S3 Pro is 6 mm slimmer (29 vs 35 mm). Weights are published on different bases (Olight Seeker 3 Pro: 200 g with battery; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Which is brighter, the Olight Seeker 3 Pro or the RovyVon S3 Pro?
The Olight Seeker 3 Pro is rated brighter: 4,200 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 50% more. For beam distance the Olight Seeker 3 Pro reaches further: 250 m vs 130 m rated throw (92% more).
Which is cheaper, the Olight Seeker 3 Pro or the RovyVon S3 Pro?
When we checked on Nov 4, 2026, the Olight Seeker 3 Pro was $139.95 at batteryjunction.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the RovyVon S3 Pro cost $60.00 less. Prices change often, so check the current price before you buy.
Do the Olight Seeker 3 Pro and RovyVon S3 Pro use the same battery?
The Olight Seeker 3 Pro runs on a removable 21700 battery; the RovyVon S3 Pro runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Compare Olight Seeker 3 Pro with similar lights
Compare RovyVon S3 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.
- RovyVon S3 Pro: specs from manufacturer published specs as listed by batteryjunction.com. Price from $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
Found an error? Email [email protected] and we will fix it.