Fenix LD35R vs Streamlight PolyTac X USB size comparison
The Streamlight PolyTac X USB is 2.6 mm (0.10 in) longer than the Fenix LD35R, and 2 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
The Streamlight PolyTac X USB is 2.6 mm (0.10 in) longer than the Fenix LD35R, and 2 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Fenix LD35R Check price ↗ | Streamlight PolyTac X USB Check price ↗ | |
| Length | 136.4 mm (5.37 in) | 139 mm (5.47 in)+2.6 mm |
| Head / width | 34 mm (1.34 in) | 32 mm (1.26 in)−2 mm |
| Body | 25.4 mm (1.00 in) | 25 mm (0.98 in)−0.4 mm |
| Weight | 185 g with battery | 139 g listed |
| Battery | 18650 / 2x CR123A | 18650 / 2x CR123A |
| Max output | 1,800 lm | 600 lm |
| Throw | 337 m | 205 m |
| Type | EDC | Work light |
| Price | $89.95 at fenixlighting.com, as of Nov 4, 2026 | $74.75 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced |
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LD35R vs PolyTac X USB: how they differ
Size and weight
The Fenix LD35R is the shorter light: 136.4 mm (5.37 in) against 139 mm (5.47 in), a difference of 2.6 mm (2%). At its widest point the Streamlight PolyTac X USB is 2 mm slimmer (32 vs 34 mm). Weights are published on different bases (Fenix LD35R: 185 g with battery; Streamlight PolyTac X USB: 139 g listed), so they are not directly comparable.
Brightness and throw
The Fenix LD35R is rated brighter: 1,800 lm maximum vs 600 lm for the Streamlight PolyTac X USB, 200% more. For beam distance the Fenix LD35R reaches further: 337 m vs 205 m rated throw (64% more).
Battery
Both run on removable 18650 / 2x CR123A batteries, so spare cells work in either light.
Price
When we checked on Nov 4, 2026, the Fenix LD35R was $89.95 at fenixlighting.com and the Streamlight PolyTac X USB $74.75 at batteryjunction.com, so the Streamlight PolyTac X USB cost $15.20 less. Prices change often, so check the current price before you buy.
Type
The Fenix LD35R is listed as edc and the Streamlight PolyTac X USB as work light, so they suit different jobs.
Which should you buy?
Choose the Fenix LD35R if you want more output (1,800 lm vs 600 lm) and longer throw (337 m vs 205 m). Choose the Streamlight PolyTac X USB if you want a slimmer profile (2 mm narrower). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix LD35R Check price ↗ Streamlight PolyTac X USB
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
LD35R vs PolyTac X USB FAQ
Which is smaller, the Fenix LD35R or the Streamlight PolyTac X USB?
The Fenix LD35R is the shorter light: 136.4 mm (5.37 in) against 139 mm (5.47 in), a difference of 2.6 mm (2%). At its widest point the Streamlight PolyTac X USB is 2 mm slimmer (32 vs 34 mm). Weights are published on different bases (Fenix LD35R: 185 g with battery; Streamlight PolyTac X USB: 139 g listed), so they are not directly comparable.
Which is brighter, the Fenix LD35R or the Streamlight PolyTac X USB?
The Fenix LD35R is rated brighter: 1,800 lm maximum vs 600 lm for the Streamlight PolyTac X USB, 200% more. For beam distance the Fenix LD35R reaches further: 337 m vs 205 m rated throw (64% more).
Which is cheaper, the Fenix LD35R or the Streamlight PolyTac X USB?
When we checked on Nov 4, 2026, the Fenix LD35R was $89.95 at fenixlighting.com and the Streamlight PolyTac X USB $74.75 at batteryjunction.com, so the Streamlight PolyTac X USB cost $15.20 less. Prices change often, so check the current price before you buy.
Do the Fenix LD35R and Streamlight PolyTac X USB use the same battery?
Both run on removable 18650 / 2x CR123A batteries, so spare cells work in either light.
Compare Fenix LD35R with similar lights
Compare Streamlight PolyTac X USB with similar lights
More
Sources
- Fenix LD35R: specs from Fenix product page (manufacturer). Price $89.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Streamlight PolyTac X USB: specs from manufacturer published specs as listed by batteryjunction.com. Price $74.75 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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