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Fenix TK17 (Stone) vs Fenix TK21R
Fenix TK17 (Stone) ($104.95) vs Fenix TK21R ($134.95) — side-by-side specs, weight, pros and cons to help you pick the right flashlight.
Spec-by-spec
| Spec | Fenix TK17 (Stone) | Fenix TK21R |
|---|---|---|
| Price | $104.95 | $134.95 |
| Weight | 197.2g | 221.4g |
| Output | 3,600 lumens, 330 m | 3,600 lumens, 480 m |
| LED | CREE XHP50.3 HD, about 5700K | One Luminus SFT90 |
| Modes | Five: four brightness levels and Strobe | Five lighting modes including four brightness levels and Strobe |
| Battery | ARB-L21-6000B 6000mAh included, USB-C | 6000mAh rechargeable li-ion battery |
| Size | 148.5 mm long, 36 mm head, 25.4 mm body | Length 159.5 mm, Head 36 mm, Body 25.4 mm |
| Runtime | 60 h max | 72 hours 30 minutes max |
| Weight | 197.2g incl. battery (fenixlighting.com spec text) | 221.4g incl. battery (fenixlighting.com spec text: 7.81 oz. (221.4g) including battery) |
Pros & Cons
Fenix TK17 (Stone)
- 3,600 lumens and 330 m for $104.95
- Two tactical tail switches
- Glass-breaking tips
- 6,000 mAh battery included
- 197.2 g is on the heavy side for a pocket
- The stone finish shows as a different color from the black version
Fenix TK21R
- 3,600 lumens and 480 m of throw
- Runs on 6000mAh rechargeable li-ion battery
- 221.4 g with the battery
- Limited lifetime guarantee from Fenix Lighting USA
- 221.4 g is heavy for a pocket
- Fenix's 72 hours 30 minutes runtime is its longest figure, normally at the lowest level, not at full output
Fenix TK17 (Stone) is the better value at $104.95. Both are part of our curated flashlight index — tap through to check current pricing.