Fenix TK15R vs Fenix TK20R UE size comparison
The Fenix TK20R UE is 4.7 mm (0.19 in) longer than the Fenix TK15R, with about the same max diameter/width. It is 2 g lighter (with battery).
The Fenix TK20R UE is 4.7 mm (0.19 in) longer than the Fenix TK15R, with about the same max diameter/width. It is 2 g lighter (with battery).
Dimensions
| Fenix TK15R Check price ↗ | Fenix TK20R UE Check price ↗ | |
| Length | 149 mm (5.87 in) | 153.7 mm (6.05 in)+4.7 mm |
| Head / width | 34 mm (1.34 in) | 34 mm (1.34 in)same |
| Body | 25.4 mm (1.00 in) | 25.4 mm (1.00 in)same |
| Weight | 205.5 g with battery | 204 g with battery−2 g |
| Battery | 21700 | 21700 |
| Max output | 3,200 lm | 2,800 lm |
| Throw | 490 m | 465 m |
| Type | Tactical | Tactical |
| Price | $119.95 at fenixlighting.com, as of Nov 4, 2026 | $89.95 at fenixlighting.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | fenixlighting.com sourced |
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TK15R vs TK20R UE: how they differ
Size and weight
The Fenix TK15R is the shorter light: 149 mm (5.87 in) against 153.7 mm (6.05 in), a difference of 4.7 mm (3%). At their widest points they are about the same (34 vs 34 mm). The Fenix TK20R UE is 2 g lighter (204 g vs 205.5 g, with battery).
Brightness and throw
The Fenix TK15R is rated brighter: 3,200 lm maximum vs 2,800 lm for the Fenix TK20R UE, 14% more. For beam distance the Fenix TK15R reaches further: 490 m vs 465 m rated throw (5% 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 TK15R was $119.95 at fenixlighting.com and the Fenix TK20R UE $89.95 at fenixlighting.com, so the Fenix TK20R UE cost $30.00 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 TK15R if you want a shorter light (4.7 mm shorter) and more output (3,200 lm vs 2,800 lm). On the specs we track, the Fenix TK15R is ahead or level everywhere; the Fenix TK20R UE 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 TK15R Check price ↗ Fenix TK20R UE
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TK15R vs TK20R UE FAQ
Which is smaller, the Fenix TK15R or the Fenix TK20R UE?
The Fenix TK15R is the shorter light: 149 mm (5.87 in) against 153.7 mm (6.05 in), a difference of 4.7 mm (3%). At their widest points they are about the same (34 vs 34 mm). The Fenix TK20R UE is 2 g lighter (204 g vs 205.5 g, with battery).
Which is brighter, the Fenix TK15R or the Fenix TK20R UE?
The Fenix TK15R is rated brighter: 3,200 lm maximum vs 2,800 lm for the Fenix TK20R UE, 14% more. For beam distance the Fenix TK15R reaches further: 490 m vs 465 m rated throw (5% more).
Which is cheaper, the Fenix TK15R or the Fenix TK20R UE?
When we checked on Nov 4, 2026, the Fenix TK15R was $119.95 at fenixlighting.com and the Fenix TK20R UE $89.95 at fenixlighting.com, so the Fenix TK20R UE cost $30.00 less. Prices change often, so check the current price before you buy.
Do the Fenix TK15R and Fenix TK20R UE use the same battery?
Both run on a removable 21700 battery, so spare cells work in either light.
Compare Fenix TK15R with similar lights
Compare Fenix TK20R UE with similar lights
More
Sources
- Fenix TK15R: specs from Fenix product page (manufacturer). Price $119.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- Fenix TK20R UE: specs from Fenix product page (manufacturer). Price $89.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
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