Acebeam Defender P16 vs Streamlight PolyTac X USB size comparison

Defender P16 vs PolyTac X USB: how they differ

Size and weight

The Acebeam Defender P16 is the shorter light: 131 mm (5.16 in) against 139 mm (5.47 in), a difference of 8 mm (6%). At their widest points they are about the same (32 vs 32 mm). Weights are published on different bases (Acebeam Defender P16: 156 g listed; Streamlight PolyTac X USB: 139 g listed), so they are not directly comparable.

Brightness and throw

The Acebeam Defender P16 is rated brighter: 1,800 lm maximum vs 600 lm for the Streamlight PolyTac X USB, 200% more. For beam distance the Acebeam Defender P16 reaches further: 484 m vs 205 m rated throw (136% more).

Battery

The Acebeam Defender P16 runs on a removable 18650 battery; the Streamlight PolyTac X USB runs on removable 18650 / 2x CR123A batteries.

Price

When we checked on Nov 4, 2026, the Acebeam Defender P16 was $79.95 at batteryjunction.com and the Streamlight PolyTac X USB $74.75 at batteryjunction.com, so the Streamlight PolyTac X USB cost $5.20 less. Prices change often, so check the current price before you buy.

Type

The Acebeam Defender P16 is listed as tactical and the Streamlight PolyTac X USB as work light, so they suit different jobs.

Which should you buy?

Choose the Acebeam Defender P16 if you want a shorter light (8 mm shorter), more output (1,800 lm vs 600 lm) and longer throw (484 m vs 205 m). On the specs we track, the Acebeam Defender P16 is ahead or level everywhere; the Streamlight PolyTac X USB makes sense mainly if its price, interface or a feature we don't track suits you better. We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.

Check price ↗ Acebeam Defender P16 Check price ↗ Streamlight PolyTac X USB

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