Fenix PD35R vs Olight ArkTac Ultra size comparison
The Olight ArkTac Ultra is about the same length as the Fenix PD35R, and 3.6 mm wider at its widest point. It is about the same weight (with battery).
The Olight ArkTac Ultra is about the same length as the Fenix PD35R, and 3.6 mm wider at its widest point. It is about the same weight (with battery).
Dimensions
| Fenix PD35R Check price ↗ | Olight ArkTac Ultra Check price ↗ | |
| Length | 136 mm (5.35 in) | 135.6 mm (5.34 in)−0.4 mm |
| Head / width | 25.4 mm (1.00 in) | 29 mm (1.14 in)+3.6 mm |
| Body | 23.2 mm (0.91 in) | — |
| Thickness | — | 17 mm (0.67 in) |
| Weight | 140 g with battery | 140 g with batterysame |
| Battery | 18650 / 2x CR123A | Built-in |
| Max output | 1,700 lm | — |
| Throw | 353 m | — |
| Type | EDC | EDC |
| Price | $89.95 at fenixlighting.com, as of Nov 4, 2026 | $159.99 at olight.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | olight.com unverified Dims from ArkTac series comparison table (row assumed to be Ultra); re-check on ArkTac Ultra page |
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
PD35R vs ArkTac Ultra: how they differ
Size and weight
The Fenix PD35R and Olight ArkTac Ultra are the same length to within half a millimetre (136 mm (5.35 in)). At its widest point the Fenix PD35R is 3.6 mm slimmer (25.4 vs 29 mm). They weigh about the same (140 g, with battery).
Brightness and throw
The Fenix PD35R is rated at 1,700 lm; we have no published maximum for the Olight ArkTac Ultra.
Battery
The Fenix PD35R runs on removable 18650 / 2x CR123A batteries; the Olight ArkTac Ultra runs on a built-in rechargeable battery. Only the Fenix PD35R lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Fenix PD35R was $89.95 at fenixlighting.com and the Olight ArkTac Ultra $159.99 at olight.com, so the Fenix PD35R cost $70.04 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog.
Which should you buy?
Choose the Fenix PD35R if you want a slimmer profile (3.6 mm narrower) and a removable cell you can swap. Choose the Olight ArkTac Ultra if you want a built-in battery with no separate cell to buy. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix PD35R Check price ↗ Olight ArkTac Ultra
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
PD35R vs ArkTac Ultra FAQ
Which is smaller, the Fenix PD35R or the Olight ArkTac Ultra?
The Fenix PD35R and Olight ArkTac Ultra are the same length to within half a millimetre (136 mm (5.35 in)). At its widest point the Fenix PD35R is 3.6 mm slimmer (25.4 vs 29 mm). They weigh about the same (140 g, with battery).
Which is cheaper, the Fenix PD35R or the Olight ArkTac Ultra?
When we checked on Nov 4, 2026, the Fenix PD35R was $89.95 at fenixlighting.com and the Olight ArkTac Ultra $159.99 at olight.com, so the Fenix PD35R cost $70.04 less. Prices change often, so check the current price before you buy.
Do the Fenix PD35R and Olight ArkTac Ultra use the same battery?
The Fenix PD35R runs on removable 18650 / 2x CR123A batteries; the Olight ArkTac Ultra runs on a built-in rechargeable battery. Only the Fenix PD35R lets you swap in a charged spare.
Compare Fenix PD35R with similar lights
Compare Olight ArkTac Ultra with similar lights
More
Sources
- Fenix PD35R: specs from Fenix product page (manufacturer). Price $89.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Olight ArkTac Ultra: specs from Olight product page (manufacturer). Some values could not be confirmed on a second source and are marked unverified. Price $159.99 from olight.com, checked Nov 4, 2026; prices change often.
Found an error? Email liambuehlerbusiness@gmail.com and we will fix it.