- compoundsemi.com
- Compare
- TK21R vs EDC37
Fenix TK21R vs Nitecore EDC37
What TK21R does better (3) and where EDC37 wins (4) — every spec side by side.
Dimensions
Size comparison
TK21REDC37
| TK21R | EDC37 | Difference | |
|---|---|---|---|
| Length / height | 159.5 mm | 108 mm | +51.5 mm |
| Head diameter / width | 36 mm | 39 mm | −3 mm |
| Weight | 221 g | 199 g | +22 g |
Drawn to the same scale from the official dimensions (front and side).
Why is TK21R better than EDC37?
- Water protection (IPx)IPx8 vs IPx42×
- Beam distance (ANSI FL1)480 m vs 420 m+14%
- Peak beam intensity57,600 cd vs 44,010 cd+31%
Why is EDC37 better than TK21R?
- Maximum output3,600 lm vs 8,000 lm2.2×
- Maximum runtime72.5 h vs 190 h2.6×
- Battery capacity6,000 mAh vs 8,000 mAh+33%
- Weight221 g vs 199 g+11%
Specifications
Side by side
| Light output | ||
| Maximum output | 3,600 lm | 8,000 lm |
| Peak beam intensity | 57,600 cd | 44,010 cd |
| Beam distance (ANSI FL1) | 480 m | 420 m |
| Light source | LED | LED |
| LED & beam | ||
| LED emitter | Luminus SFT-90 | NiteLab UHi 20 MAX |
| LED maker | Luminus | NiteLab |
| Number of LEDs | — | 2 |
| Colour temperature | 6,600K | — |
| Battery & charging | ||
| Battery | 21700 Li-ion | Built-in Li-ion / Li-Po |
| Battery capacity | 6,000 mAh | 8,000 mAh |
| Maximum runtime | 72.5 h | 190 h |
| Rechargeable | Yes | Yes |
| USB-C charging | Yes | Yes |
| Charging time | — | 2 h |
| Battery level indicator | Yes | — |
| Build & durability | ||
| Protection rating | IP68 | IP54 |
| Water protection (IPx) | IPx8 | IPx4 |
| Impact resistance (drop) | — | 2 m |
| Body material | Aluminium | — |
| Size & weight | ||
| Length / height | 159.5 mm | 108 mm |
| Head diameter / width | 36 mm | 39 mm |
| Body diameter / depth | 25.4 mm | — |
| Weight | 221 g | 199 g |
| Modes & features | ||
| Switch | Dual switches | Tail switch |
| Tactical tail switch (momentary on) | Yes | — |
| Strobe | Yes | Yes |
| Lockout | — | Yes |
| Mode memory | Yes | — |
| Colours | — | Black |
