Fenix HM71R vs Olight Perun 3 size comparison
The Olight Perun 3 is 11 mm (0.43 in) longer than the Fenix HM71R, and 17 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 11 mm (0.43 in) longer than the Fenix HM71R, and 17 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 HM71R Check price ↗ | Olight Perun 3 Check price ↗ | |
| Length | 106 mm (4.17 in) | 117 mm (4.61 in)+11 mm |
| Head / width | 45 mm (1.77 in) | 28 mm (1.10 in)−17 mm |
| Body | — | 28 mm (1.10 in) |
| Thickness | 46 mm (1.81 in) | — |
| Weight | 207.5 g with battery and headband | 150 g listed |
| Battery | 21700 | 21700 |
| Max output | 2,700 lm | 3,000 lm |
| Throw | 230 m | 160 m |
| Type | Headlamp / right-angle | Headlamp / right-angle |
| Price | $119.95 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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HM71R vs Perun 3: how they differ
Size and weight
The Fenix HM71R is the shorter light: 106 mm (4.17 in) against 117 mm (4.61 in), a difference of 11 mm (9%). At its widest point the Olight Perun 3 is 17 mm slimmer (28 vs 45 mm). Weights are published on different bases (Fenix HM71R: 207.5 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 2,700 lm for the Fenix HM71R, 11% more. For beam distance the Fenix HM71R reaches further: 230 m vs 160 m rated throw (44% 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 Fenix HM71R was $119.95 at fenixlighting.com and the Olight Perun 3 $89.99 at olight.com, so the Olight Perun 3 cost $29.96 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 HM71R if you want a shorter light (11 mm shorter) and longer throw (230 m vs 160 m). Choose the Olight Perun 3 if you want a slimmer profile (17 mm narrower) and more output (3,000 lm vs 2,700 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix HM71R Check price ↗ Olight Perun 3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
HM71R vs Perun 3 FAQ
Which is smaller, the Fenix HM71R or the Olight Perun 3?
The Fenix HM71R is the shorter light: 106 mm (4.17 in) against 117 mm (4.61 in), a difference of 11 mm (9%). At its widest point the Olight Perun 3 is 17 mm slimmer (28 vs 45 mm). Weights are published on different bases (Fenix HM71R: 207.5 g with battery and headband; Olight Perun 3: 150 g listed), so they are not directly comparable.
Which is brighter, the Fenix HM71R or the Olight Perun 3?
The Olight Perun 3 is rated brighter: 3,000 lm maximum vs 2,700 lm for the Fenix HM71R, 11% more. For beam distance the Fenix HM71R reaches further: 230 m vs 160 m rated throw (44% more).
Which is cheaper, the Fenix HM71R or the Olight Perun 3?
When we checked on Nov 4, 2026, the Fenix HM71R was $119.95 at fenixlighting.com and the Olight Perun 3 $89.99 at olight.com, so the Olight Perun 3 cost $29.96 less. Prices change often, so check the current price before you buy.
Do the Fenix HM71R and Olight Perun 3 use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Fenix HM71R with similar lights
Compare Olight Perun 3 with similar lights
More
Sources
- Fenix HM71R: specs from Fenix product page (manufacturer). Price $119.95 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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