Fenix HM61R V2.0 vs Olight Perun 3 size comparison
The Olight Perun 3 is 16 mm (0.63 in) longer than the Fenix HM61R V2.0, and 8 mm narrower at its widest point. Weights are published on different bases (listed vs with battery and headband), so compare them with care.
The Olight Perun 3 is 16 mm (0.63 in) longer than the Fenix HM61R V2.0, and 8 mm narrower at its widest point. Weights are published on different bases (listed vs with battery and headband), so compare them with care.
Dimensions
| Fenix HM61R V2.0 Check price ↗ | Olight Perun 3 Check price ↗ | |
| Length | 101 mm (3.98 in) | 117 mm (4.61 in)+16 mm |
| Head / width | 36 mm (1.42 in) | 28 mm (1.10 in)−8 mm |
| Body | — | 28 mm (1.10 in) |
| Thickness | 45 mm (1.77 in) | — |
| Weight | 152 g with battery and headband | 150 g listed |
| Battery | 18650 / 2x CR123A | 21700 |
| Max output | 1,600 lm | 3,000 lm |
| Throw | 162 m | 160 m |
| Type | Headlamp / right-angle | Headlamp / right-angle |
| Price | $76.45 at fenixlighting.com, as of Nov 4, 2026 | $89.99 at olight.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced Headlamp unit; front view drawn width x height | batteryjunction.com sourced |
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HM61R V2.0 vs Perun 3: how they differ
Size and weight
The Fenix HM61R V2.0 is the shorter light: 101 mm (3.98 in) against 117 mm (4.61 in), a difference of 16 mm (14%). At its widest point the Olight Perun 3 is 8 mm slimmer (28 vs 36 mm). Weights are published on different bases (Fenix HM61R V2.0: 152 g with battery and headband; Olight Perun 3: 150 g listed), so they are not directly comparable.
Brightness and throw
The Olight Perun 3 is rated brighter: 3,000 lm maximum vs 1,600 lm for the Fenix HM61R V2.0, 88% more. For beam distance the Fenix HM61R V2.0 reaches further: 162 m vs 160 m rated throw (1% more).
Battery
The Fenix HM61R V2.0 runs on removable 18650 / 2x CR123A batteries; the Olight Perun 3 runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Price
When we checked on Nov 4, 2026, the Fenix HM61R V2.0 was $76.45 at fenixlighting.com and the Olight Perun 3 $89.99 at olight.com, so the Fenix HM61R V2.0 cost $13.54 less. Prices change often, so check the current price before you buy.
Type
Both are headlamps / right-angle lights in our catalog.
Which should you buy?
Choose the Fenix HM61R V2.0 if you want a shorter light (16 mm shorter). Choose the Olight Perun 3 if you want a slimmer profile (8 mm narrower) and more output (3,000 lm vs 1,600 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix HM61R V2.0 Check price ↗ Olight Perun 3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
HM61R V2.0 vs Perun 3 FAQ
Which is smaller, the Fenix HM61R V2.0 or the Olight Perun 3?
The Fenix HM61R V2.0 is the shorter light: 101 mm (3.98 in) against 117 mm (4.61 in), a difference of 16 mm (14%). At its widest point the Olight Perun 3 is 8 mm slimmer (28 vs 36 mm). Weights are published on different bases (Fenix HM61R V2.0: 152 g with battery and headband; Olight Perun 3: 150 g listed), so they are not directly comparable.
Which is brighter, the Fenix HM61R V2.0 or the Olight Perun 3?
The Olight Perun 3 is rated brighter: 3,000 lm maximum vs 1,600 lm for the Fenix HM61R V2.0, 88% more. For beam distance the Fenix HM61R V2.0 reaches further: 162 m vs 160 m rated throw (1% more).
Which is cheaper, the Fenix HM61R V2.0 or the Olight Perun 3?
When we checked on Nov 4, 2026, the Fenix HM61R V2.0 was $76.45 at fenixlighting.com and the Olight Perun 3 $89.99 at olight.com, so the Fenix HM61R V2.0 cost $13.54 less. Prices change often, so check the current price before you buy.
Do the Fenix HM61R V2.0 and Olight Perun 3 use the same battery?
The Fenix HM61R V2.0 runs on removable 18650 / 2x CR123A batteries; the Olight Perun 3 runs on a removable 21700 battery. For scale, a 18650 cell is about 18 × 65 mm and a 21700 about 21 × 70 mm (nominal).
Compare Fenix HM61R V2.0 with similar lights
Compare Olight Perun 3 with similar lights
More
Sources
- Fenix HM61R V2.0: specs from Fenix product page (manufacturer). Price $76.45 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Olight Perun 3: specs from Olight product page (manufacturer); manufacturer published specs as listed by batteryjunction.com. Price $89.99 from olight.com, checked Nov 4, 2026; prices change often.
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