Fenix HM75R PRO vs ThruNite TH30 V2 size comparison
The ThruNite TH30 V2 is 9.2 mm (0.36 in) longer than the Fenix HM75R PRO, and 36.9 mm narrower at its widest point. Weights are published on different bases (listed vs with battery and headband), so compare them with care.
The ThruNite TH30 V2 is 9.2 mm (0.36 in) longer than the Fenix HM75R PRO, and 36.9 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 HM75R PRO Check price ↗ | ThruNite TH30 V2 Check price ↗ | |
| Length | 97.8 mm (3.85 in) | 107 mm (4.21 in)+9.2 mm |
| Head / width | 61.9 mm (2.44 in) | 25 mm (0.98 in)−36.9 mm |
| Body | — | 24 mm (0.94 in) |
| Thickness | 50.4 mm (1.98 in) | — |
| Weight | 214 g with battery and headband | 71 g listed |
| Battery | 21700 | 18650 |
| Max output | 3,500 lm | 3,320 lm |
| Throw | 398 m | 170 m |
| Type | Headlamp / right-angle | Headlamp / right-angle |
| Price | $139.95 at fenixlighting.com, as of Nov 4, 2026 | not verified yet |
| Source | fenixlighting.com sourced Headlamp unit; front view drawn width x height | batteryjunction.com sourced |
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HM75R PRO vs TH30 V2: how they differ
Size and weight
The Fenix HM75R PRO is the shorter light: 97.8 mm (3.85 in) against 107 mm (4.21 in), a difference of 9.2 mm (9%). At its widest point the ThruNite TH30 V2 is 36.9 mm slimmer (25 vs 61.9 mm). Weights are published on different bases (Fenix HM75R PRO: 214 g with battery and headband; ThruNite TH30 V2: 71 g listed), so they are not directly comparable.
Brightness and throw
The Fenix HM75R PRO is rated brighter: 3,500 lm maximum vs 3,320 lm for the ThruNite TH30 V2, 5% more. For beam distance the Fenix HM75R PRO reaches further: 398 m vs 170 m rated throw (134% more).
Battery
The Fenix HM75R PRO runs on a removable 21700 battery; the ThruNite TH30 V2 runs on a removable 18650 battery. For scale, a 21700 cell is about 21 × 70 mm and a 18650 about 18 × 65 mm (nominal).
Type
Both are headlamps / right-angle lights in our catalog.
Which should you buy?
Choose the Fenix HM75R PRO if you want a shorter light (9.2 mm shorter) and longer throw (398 m vs 170 m). Choose the ThruNite TH30 V2 if you want a slimmer profile (36.9 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix HM75R PRO Check price ↗ ThruNite TH30 V2
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
HM75R PRO vs TH30 V2 FAQ
Which is smaller, the Fenix HM75R PRO or the ThruNite TH30 V2?
The Fenix HM75R PRO is the shorter light: 97.8 mm (3.85 in) against 107 mm (4.21 in), a difference of 9.2 mm (9%). At its widest point the ThruNite TH30 V2 is 36.9 mm slimmer (25 vs 61.9 mm). Weights are published on different bases (Fenix HM75R PRO: 214 g with battery and headband; ThruNite TH30 V2: 71 g listed), so they are not directly comparable.
Which is brighter, the Fenix HM75R PRO or the ThruNite TH30 V2?
The Fenix HM75R PRO is rated brighter: 3,500 lm maximum vs 3,320 lm for the ThruNite TH30 V2, 5% more. For beam distance the Fenix HM75R PRO reaches further: 398 m vs 170 m rated throw (134% more).
Do the Fenix HM75R PRO and ThruNite TH30 V2 use the same battery?
The Fenix HM75R PRO runs on a removable 21700 battery; the ThruNite TH30 V2 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 Fenix HM75R PRO with similar lights
Compare ThruNite TH30 V2 with similar lights
More
Sources
- Fenix HM75R PRO: specs from Fenix product page (manufacturer). Price $139.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- ThruNite TH30 V2: specs from manufacturer published specs as listed by batteryjunction.com. No verified price yet.
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