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Fenix TK21R vs Fenix LD36R
Fenix TK21R ($134.95) vs Fenix LD36R ($114.95) — side-by-side specs, weight, pros and cons to help you pick the right flashlight.
Spec-by-spec
| Spec | Fenix TK21R | Fenix LD36R |
|---|---|---|
| Price | $134.95 | $114.95 |
| Weight | 221.4g | 231g |
| Output | 3,600 lumens, 480 m | 3,600 lumens, 385 m |
| LED | One Luminus SFT90 | 3 x Luminus SFT25R Gen2 LEDs and 3 x high-performance RGB LEDs |
| Modes | Five lighting modes including four brightness levels and Strobe | Fourteen lighting modes including five levels of white light, Strobe, six different colors levels, with a breathing and stepless color mode |
| Battery | 6000mAh rechargeable li-ion battery | 21700 li-ion rechargeable battery |
| Size | Length 159.5 mm, Head 36 mm, Body 25.4 mm | Length 139.6 mm, Head 40 mm, Body 26.5 mm |
| Runtime | 72 hours 30 minutes max | 65 hours 18 minutes max |
| Weight | 221.4g incl. battery (fenixlighting.com spec text: 7.81 oz. (221.4g) including battery) | 231g incl. battery (fenixlighting.com spec text: 8.15 oz. (231g) including battery) |
Pros & Cons
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 LD36R
- 3,600 lumens and 385 m of throw
- Runs on 21700 li-ion rechargeable battery
- 231 g with the battery
- Limited lifetime guarantee from Fenix Lighting USA
- 231 g is heavy for a pocket
- Fenix's 65 hours 18 minutes runtime is its longest figure, normally at the lowest level, not at full output
Fenix LD36R is the better value at $114.95. If weight matters most, Fenix TK21R carries lighter at 221.4g. Both are part of our curated flashlight index — tap through to check current pricing.