Fenix TK16 V2.0 vs Klarus XT21C size comparison
The Klarus XT21C is 4 mm (0.16 in) longer than the Fenix TK16 V2.0, and 1 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
The Klarus XT21C is 4 mm (0.16 in) longer than the Fenix TK16 V2.0, and 1 mm wider at its widest point. Weights are published on different bases (listed vs without battery), so compare them with care.
Dimensions
| Fenix TK16 V2.0 Check price ↗ | Klarus XT21C Check price ↗ | |
| Length | 143 mm (5.63 in) | 147 mm (5.79 in)+4 mm |
| Head / width | 34 mm (1.34 in) | 35 mm (1.38 in)+1 mm |
| Body | 25.4 mm (1.00 in) | 25 mm (0.98 in)−0.4 mm |
| Weight | 112 g without battery | 110 g listed |
| Battery | 21700 | 21700 |
| Max output | 3,100 lm | 3,000 lm |
| Throw | 380 m | 324 m |
| Type | Tactical | Tactical |
| Price | $99.95 at fenixlighting.com, as of Nov 4, 2026 | $104.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | batteryjunction.com sourced |
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TK16 V2.0 vs XT21C: how they differ
Size and weight
The Fenix TK16 V2.0 is the shorter light: 143 mm (5.63 in) against 147 mm (5.79 in), a difference of 4 mm (3%). At its widest point the Fenix TK16 V2.0 is 1 mm slimmer (34 vs 35 mm). Weights are published on different bases (Fenix TK16 V2.0: 112 g without battery; Klarus XT21C: 110 g listed), so they are not directly comparable.
Brightness and throw
The Fenix TK16 V2.0 is rated brighter: 3,100 lm maximum vs 3,000 lm for the Klarus XT21C, 3% more. For beam distance the Fenix TK16 V2.0 reaches further: 380 m vs 324 m rated throw (17% more).
Battery
Both run on a removable 21700 battery, so spare cells work in either light.
Price
When we checked on Nov 4, 2026, the Fenix TK16 V2.0 was $99.95 at fenixlighting.com and the Klarus XT21C $104.95 at batteryjunction.com, so the Fenix TK16 V2.0 cost $5.00 less. Prices change often, so check the current price before you buy.
Type
Both are tactical lights in our catalog with a tube body.
Which should you buy?
Choose the Fenix TK16 V2.0 if you want a shorter light (4 mm shorter) and longer throw (380 m vs 324 m). On the specs we track, the Fenix TK16 V2.0 is ahead or level everywhere; the Klarus XT21C 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 ↗ Fenix TK16 V2.0 Check price ↗ Klarus XT21C
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TK16 V2.0 vs XT21C FAQ
Which is smaller, the Fenix TK16 V2.0 or the Klarus XT21C?
The Fenix TK16 V2.0 is the shorter light: 143 mm (5.63 in) against 147 mm (5.79 in), a difference of 4 mm (3%). At its widest point the Fenix TK16 V2.0 is 1 mm slimmer (34 vs 35 mm). Weights are published on different bases (Fenix TK16 V2.0: 112 g without battery; Klarus XT21C: 110 g listed), so they are not directly comparable.
Which is brighter, the Fenix TK16 V2.0 or the Klarus XT21C?
The Fenix TK16 V2.0 is rated brighter: 3,100 lm maximum vs 3,000 lm for the Klarus XT21C, 3% more. For beam distance the Fenix TK16 V2.0 reaches further: 380 m vs 324 m rated throw (17% more).
Which is cheaper, the Fenix TK16 V2.0 or the Klarus XT21C?
When we checked on Nov 4, 2026, the Fenix TK16 V2.0 was $99.95 at fenixlighting.com and the Klarus XT21C $104.95 at batteryjunction.com, so the Fenix TK16 V2.0 cost $5.00 less. Prices change often, so check the current price before you buy.
Do the Fenix TK16 V2.0 and Klarus XT21C use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Fenix TK16 V2.0 with similar lights
Compare Klarus XT21C with similar lights
More
Sources
- Fenix TK16 V2.0: specs from Fenix product page (manufacturer). Drawing: shape measured from manufacturer photo (fenixlighting.com), scaled to the published length and diameter. Price $99.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Klarus XT21C: specs from manufacturer published specs as listed by batteryjunction.com. Drawing: outline from published specs. Price $104.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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