Fenix WT16R vs Streamlight PolyTac X USB size comparison
The Streamlight PolyTac X USB is 12 mm (0.47 in) longer than the Fenix WT16R, and 5 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 12 mm (0.47 in) longer than the Fenix WT16R, and 5 mm narrower at its widest point. Weights are published on different bases (listed vs with battery), so compare them with care.
Dimensions
| Fenix WT16R Check price ↗ | Streamlight PolyTac X USB Check price ↗ | |
| Length | 127 mm (5.00 in) | 139 mm (5.47 in)+12 mm |
| Head / width | 37 mm (1.46 in) | 32 mm (1.26 in)−5 mm |
| Body | — | 25 mm (0.98 in) |
| Thickness | 26 mm (1.02 in) | — |
| Weight | 129 g with battery | 139 g listed |
| Battery | Built-in | 18650 / 2x CR123A |
| Max output | 300 lm | 600 lm |
| Throw | 115 m | 205 m |
| Type | Work light | Work light |
| Price | $64.95 at fenixlighting.com, as of Nov 4, 2026 | $74.75 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced Listed 37.0 mm wide x 26.0 mm thick | batteryjunction.com sourced |
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WT16R vs PolyTac X USB: how they differ
Size and weight
The Fenix WT16R is the shorter light: 127 mm (5.00 in) against 139 mm (5.47 in), a difference of 12 mm (9%). At its widest point the Streamlight PolyTac X USB is 5 mm slimmer (32 vs 37 mm). Weights are published on different bases (Fenix WT16R: 129 g with battery; Streamlight PolyTac X USB: 139 g listed), so they are not directly comparable.
Brightness and throw
The Streamlight PolyTac X USB is rated brighter: 600 lm maximum vs 300 lm for the Fenix WT16R, 100% more. For beam distance the Streamlight PolyTac X USB reaches further: 205 m vs 115 m rated throw (78% more).
Battery
The Fenix WT16R runs on a built-in rechargeable battery; the Streamlight PolyTac X USB runs on removable 18650 / 2x CR123A batteries. Only the Streamlight PolyTac X USB lets you swap in a charged spare.
Price
When we checked on Nov 4, 2026, the Fenix WT16R was $64.95 at fenixlighting.com and the Streamlight PolyTac X USB $74.75 at batteryjunction.com, so the Fenix WT16R cost $9.80 less. Prices change often, so check the current price before you buy.
Type
Both are work lights in our catalog.
Which should you buy?
Choose the Fenix WT16R if you want a shorter light (12 mm shorter) and a built-in battery with no separate cell to buy. Choose the Streamlight PolyTac X USB if you want a slimmer profile (5 mm narrower), more output (600 lm vs 300 lm), longer throw (205 m vs 115 m) and a removable cell you can swap. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix WT16R 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
WT16R vs PolyTac X USB FAQ
Which is smaller, the Fenix WT16R or the Streamlight PolyTac X USB?
The Fenix WT16R is the shorter light: 127 mm (5.00 in) against 139 mm (5.47 in), a difference of 12 mm (9%). At its widest point the Streamlight PolyTac X USB is 5 mm slimmer (32 vs 37 mm). Weights are published on different bases (Fenix WT16R: 129 g with battery; Streamlight PolyTac X USB: 139 g listed), so they are not directly comparable.
Which is brighter, the Fenix WT16R or the Streamlight PolyTac X USB?
The Streamlight PolyTac X USB is rated brighter: 600 lm maximum vs 300 lm for the Fenix WT16R, 100% more. For beam distance the Streamlight PolyTac X USB reaches further: 205 m vs 115 m rated throw (78% more).
Which is cheaper, the Fenix WT16R or the Streamlight PolyTac X USB?
When we checked on Nov 4, 2026, the Fenix WT16R was $64.95 at fenixlighting.com and the Streamlight PolyTac X USB $74.75 at batteryjunction.com, so the Fenix WT16R cost $9.80 less. Prices change often, so check the current price before you buy.
Do the Fenix WT16R and Streamlight PolyTac X USB use the same battery?
The Fenix WT16R runs on a built-in rechargeable battery; the Streamlight PolyTac X USB runs on removable 18650 / 2x CR123A batteries. Only the Streamlight PolyTac X USB lets you swap in a charged spare.
Compare Fenix WT16R with similar lights
Compare Streamlight PolyTac X USB with similar lights
More
Sources
- Fenix WT16R: specs from Fenix product page (manufacturer). Price $64.95 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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