Fenix TK21R vs Fenix TK22R PRO size comparison
The Fenix TK22R PRO is 5.5 mm (0.22 in) longer than the Fenix TK21R, and 4 mm wider at its widest point. It is 30 g heavier (with battery).
The Fenix TK22R PRO is 5.5 mm (0.22 in) longer than the Fenix TK21R, and 4 mm wider at its widest point. It is 30 g heavier (with battery).
Dimensions
| Fenix TK21R Check price ↗ | Fenix TK22R PRO Check price ↗ | |
| Length | 159.5 mm (6.28 in) | 165 mm (6.50 in)+5.5 mm |
| Head / width | 36 mm (1.42 in) | 40 mm (1.57 in)+4 mm |
| Body | 25.4 mm (1.00 in) | 26 mm (1.02 in)+0.6 mm |
| Weight | 221.4 g with battery | 251 g with battery+30 g |
| Battery | One included 6000mAh rechargeable li-ion | 21700 |
| Max output | 3,600 lm | 4,200 lm |
| Throw | 480 m | 440 m |
| Type | Tactical | Tactical |
| Price | $134.95 at fenixlighting.com, as of Nov 4, 2026 | $159.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | fenixlighting.com sourced Non-round head: listed 40 mm wide x 26 mm high |
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TK21R vs TK22R PRO: how they differ
Size and weight
The Fenix TK21R is the shorter light: 159.5 mm (6.28 in) against 165 mm (6.50 in), a difference of 5.5 mm (3%). At its widest point the Fenix TK21R is 4 mm slimmer (36 vs 40 mm). The Fenix TK21R is 30 g lighter (221.4 g vs 251 g, with battery).
Brightness and throw
The Fenix TK22R PRO is rated brighter: 4,200 lm maximum vs 3,600 lm for the Fenix TK21R, 17% more. For beam distance the Fenix TK21R reaches further: 480 m vs 440 m rated throw (9% more).
Battery
The Fenix TK21R runs on its own battery (One included 6000mAh rechargeable li-ion); the Fenix TK22R PRO runs on a removable 21700 battery.
Price
When we checked on Nov 4, 2026, the Fenix TK21R was $134.95 at fenixlighting.com and the Fenix TK22R PRO $159.95 at fenixlighting.com, so the Fenix TK21R cost $25.00 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 TK21R if you want a shorter light (5.5 mm shorter), a slimmer profile (4 mm narrower) and less weight (30 g lighter). Choose the Fenix TK22R PRO if you want more output (4,200 lm vs 3,600 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix TK21R Check price ↗ Fenix TK22R PRO
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TK21R vs TK22R PRO FAQ
Which is smaller, the Fenix TK21R or the Fenix TK22R PRO?
The Fenix TK21R is the shorter light: 159.5 mm (6.28 in) against 165 mm (6.50 in), a difference of 5.5 mm (3%). At its widest point the Fenix TK21R is 4 mm slimmer (36 vs 40 mm). The Fenix TK21R is 30 g lighter (221.4 g vs 251 g, with battery).
Which is brighter, the Fenix TK21R or the Fenix TK22R PRO?
The Fenix TK22R PRO is rated brighter: 4,200 lm maximum vs 3,600 lm for the Fenix TK21R, 17% more. For beam distance the Fenix TK21R reaches further: 480 m vs 440 m rated throw (9% more).
Which is cheaper, the Fenix TK21R or the Fenix TK22R PRO?
When we checked on Nov 4, 2026, the Fenix TK21R was $134.95 at fenixlighting.com and the Fenix TK22R PRO $159.95 at fenixlighting.com, so the Fenix TK21R cost $25.00 less. Prices change often, so check the current price before you buy.
Do the Fenix TK21R and Fenix TK22R PRO use the same battery?
The Fenix TK21R runs on its own battery (One included 6000mAh rechargeable li-ion); the Fenix TK22R PRO runs on a removable 21700 battery.
Compare Fenix TK21R with similar lights
Compare Fenix TK22R PRO with similar lights
More
Sources
- Fenix TK21R: specs from Fenix product page (manufacturer). Price $134.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Fenix TK22R PRO: specs from Fenix product page (manufacturer). Price $159.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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