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- LD36R vs TK21R
Fenix LD36R vs Fenix TK21R
What LD36R does better (0) and where TK21R wins (4) — every spec side by side.
Dimensions
Size comparison
LD36RTK21R
| LD36R | TK21R | Difference | |
|---|---|---|---|
| Length / height | 139.6 mm | 159.5 mm | −19.9 mm |
| Head diameter / width | 40 mm | 36 mm | +4 mm |
| Body diameter / depth | 26.5 mm | 25.4 mm | +1.1 mm |
| Weight | 231 g | 221 g | +10 g |
Drawn to the same scale from the official dimensions (front and side).
Why is LD36R better than TK21R?
LD36R has no measurable advantages in this pair.
Why is TK21R better than LD36R?
- Beam distance (ANSI FL1)385 m vs 480 m+25%
- Peak beam intensity37,060 cd vs 57,600 cd+55%
- Maximum runtime65.3 h vs 72.5 h+11%
- Weight231 g vs 221 g+5%
Specifications
Side by side
| Light output | ||
| Maximum output | 3,600 lm | 3,600 lm |
| Peak beam intensity | 37,060 cd | 57,600 cd |
| Beam distance (ANSI FL1) | 385 m | 480 m |
| Light source | LED | LED |
| LED & beam | ||
| LED emitter | Luminus SFT-25R | Luminus SFT-90 |
| LED maker | Luminus | Luminus |
| Number of LEDs | 3 | — |
| Colour temperature | 6,500K | 6,600K |
| Battery & charging | ||
| Battery | 21700 Li-ion | 21700 Li-ion |
| Battery capacity | — | 6,000 mAh |
| Maximum runtime | 65.3 h | 72.5 h |
| Rechargeable | Yes | Yes |
| USB-C charging | Yes | Yes |
| Battery level indicator | Yes | Yes |
| Build & durability | ||
| Protection rating | IP68 | IP68 |
| Water protection (IPx) | IPx8 | IPx8 |
| Body material | — | Aluminium |
| Size & weight | ||
| Length / height | 139.6 mm | 159.5 mm |
| Head diameter / width | 40 mm | 36 mm |
| Body diameter / depth | 26.5 mm | 25.4 mm |
| Weight | 231 g | 221 g |
| Modes & features | ||
| Stepless (ramping) brightness | Yes | — |
| Switch | — | Dual switches |
| Tactical tail switch (momentary on) | — | Yes |
| Strobe | Yes | Yes |
| Red light | Yes | — |
| Green / blue / RGB light | Yes | — |
| Lockout | Yes | — |
| Mode memory | Yes | Yes |
