Klarus XT21C size & dimensions
Klarus XT21C shown at true scale next to a 21700 cell. Add another light to compare.
Specs
| Klarus XT21C Check price ↗ | |
| Length | 147 mm (5.79 in) |
| Head / width | 35 mm (1.38 in) |
| Body | 25 mm (0.98 in) |
| Weight | 110 g listed |
| Battery | 21700 |
| Max output | 3,000 lm |
| Throw | 324 m |
| Type | Tactical |
| Price | $104.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced |
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Size in everyday terms
The Klarus XT21C is 147 mm (5.79 in) long and 35 mm (1.38 in) across at its widest point. That is about 1.7 times the length of a credit card (85.6 mm), or about 2.9 AA batteries end to end (50.5 mm each). Its widest point is 10.7 mm wider than a US quarter (24.26 mm). Next to a phone the size of an iPhone 15 (147.6 mm tall) it is 100% as long.
How it ranks
Among the 26 tactical lights in our catalog, the Klarus XT21C is the 13th shortest, 11th brightest of 26 with a published output and 23rd for throw of 26 with a published beam distance.
Battery, output and weight
The Klarus XT21C runs on a removable 21700 battery. The manufacturer rates its maximum output at 3,000 lm and its throw at 324 m. Listed weight is 110 g. When we checked on Nov 4, 2026, it was $104.95 at batteryjunction.com.
Featured in: Best tactical flashlights (#23).
Klarus XT21C vs…
XT21C FAQ
How big is the Klarus XT21C?
The Klarus XT21C is 147 mm (5.79 in) long and 35 mm (1.38 in) across at its widest point. That is about 1.7 times the length of a credit card (85.6 mm), or about 2.9 AA batteries end to end (50.5 mm each). Its widest point is 10.7 mm wider than a US quarter (24.26 mm). Next to a phone the size of an iPhone 15 (147.6 mm tall) it is 100% as long.
What battery does the Klarus XT21C use?
The Klarus XT21C runs on a removable 21700 battery.
How bright is the Klarus XT21C?
The manufacturer rates the Klarus XT21C at 3,000 lm maximum output, with 324 m of throw.
More Klarus lights
See also: Best tactical flashlights
Sources
- Klarus XT21C: specs from manufacturer published specs as listed by batteryjunction.com. Price $104.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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