Nitecore EDC31 vs RovyVon S3 Pro size comparison
The RovyVon S3 Pro is 6 mm (0.24 in) longer than the Nitecore EDC31, and 6 mm wider at its widest point. Weights are published on different bases (listed vs with clip), so compare them with care.
Nitecore EDC31: Photo: Nitecore · Image policy
The RovyVon S3 Pro is 6 mm (0.24 in) longer than the Nitecore EDC31, and 6 mm wider at its widest point. Weights are published on different bases (listed vs with clip), so compare them with care.
Dimensions
| Nitecore EDC31 Check price ↗ | RovyVon S3 Pro Check price ↗ | |
| Length | 113 mm (4.45 in) | 119 mm (4.69 in)+6 mm |
| Head / width | 23 mm (0.91 in) | 29 mm (1.14 in)+6 mm |
| Body | 23 mm (0.91 in) | 29 mm (1.14 in)+6 mm |
| Weight | 100 g with clip | 150 g listed |
| Battery | Built-in | 18650 |
| Max output | 3,500 lm | 2,800 lm |
| Throw | 380 m | 130 m |
| Type | EDC | EDC |
| Price | $54.95 at batteryjunction.com, as of Nov 4, 2026 | from $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced Maker page: 4.46 in, head 0.91 in, tube 0.89 in, 3.53 oz with clip | batteryjunction.com sourced |
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EDC31 vs S3 Pro: how they differ
Size and weight
The Nitecore EDC31 is the shorter light: 113 mm (4.45 in) against 119 mm (4.69 in), a difference of 6 mm (5%). At its widest point the Nitecore EDC31 is 6 mm slimmer (23 vs 29 mm). Weights are published on different bases (Nitecore EDC31: 100 g with clip; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Brightness and throw
The Nitecore EDC31 is rated brighter: 3,500 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 25% more. For beam distance the Nitecore EDC31 reaches further: 380 m vs 130 m rated throw (192% more).
Battery
The Nitecore EDC31 runs on a built-in rechargeable battery; the RovyVon S3 Pro runs on a removable 18650 battery. Only the RovyVon S3 Pro lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Nitecore EDC31 was $54.95 at batteryjunction.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the Nitecore EDC31 cost $25.00 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 Nitecore EDC31 if you want a shorter light (6 mm shorter), a slimmer profile (6 mm narrower), more output (3,500 lm vs 2,800 lm), longer throw (380 m vs 130 m) and a built-in battery with no separate cell to buy. Choose the RovyVon S3 Pro if you want a removable cell you can swap. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Nitecore EDC31 Check price ↗ RovyVon S3 Pro
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
EDC31 vs S3 Pro FAQ
Which is smaller, the Nitecore EDC31 or the RovyVon S3 Pro?
The Nitecore EDC31 is the shorter light: 113 mm (4.45 in) against 119 mm (4.69 in), a difference of 6 mm (5%). At its widest point the Nitecore EDC31 is 6 mm slimmer (23 vs 29 mm). Weights are published on different bases (Nitecore EDC31: 100 g with clip; RovyVon S3 Pro: 150 g listed), so they are not directly comparable.
Which is brighter, the Nitecore EDC31 or the RovyVon S3 Pro?
The Nitecore EDC31 is rated brighter: 3,500 lm maximum vs 2,800 lm for the RovyVon S3 Pro, 25% more. For beam distance the Nitecore EDC31 reaches further: 380 m vs 130 m rated throw (192% more).
Which is cheaper, the Nitecore EDC31 or the RovyVon S3 Pro?
When we checked on Nov 4, 2026, the Nitecore EDC31 was $54.95 at batteryjunction.com and the RovyVon S3 Pro from $79.95 at batteryjunction.com, so the Nitecore EDC31 cost $25.00 less. Prices change often, so check the current price before you buy.
Do the Nitecore EDC31 and RovyVon S3 Pro use the same battery?
The Nitecore EDC31 runs on a built-in rechargeable battery; the RovyVon S3 Pro runs on a removable 18650 battery. Only the RovyVon S3 Pro lets you swap in a charged spare.
Compare Nitecore EDC31 with similar lights
Compare RovyVon S3 Pro with similar lights
More
Sources
- Nitecore EDC31: specs from manufacturer published specs as listed by batteryjunction.com. Photo from manufacturer: the maker's own product photo with the background removed, scaled to the published length and diameter (Photo: Nitecore; image policy). Price $54.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- RovyVon S3 Pro: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price from $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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