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- T37 vs TK21R
Acebeam T37 vs Fenix TK21R
What T37 does better (1) and where TK21R wins (2) — every spec side by side.
Why is T37 better than TK21R?
- Maximum output4,000 lm vs 3,600 lm+11%
Why is TK21R better than T37?
- Beam distance (ANSI FL1)440 m vs 480 m+9%
- Peak beam intensity48,400 cd vs 57,600 cd+19%
Specifications
Side by side
| Light output | ||
| Maximum output | 4,000 lm | 3,600 lm |
| Peak beam intensity | 48,400 cd | 57,600 cd |
| Beam distance (ANSI FL1) | 440 m | 480 m |
| Light source | LED | LED |
| LED & beam | ||
| LED emitter | — | Luminus SFT-90 |
| LED maker | — | Luminus |
| Colour temperature | 6,500K | 6,600K |
| Battery & charging | ||
| Battery | 21700 Li-ion | 21700 Li-ion |
| Battery capacity | — | 6,000 mAh |
| Maximum runtime | 72 h | 72.5 h |
| Rechargeable | Yes | Yes |
| USB-C charging | Yes | Yes |
| Battery level indicator | — | Yes |
| Build & durability | ||
| Protection rating | IP68 | IP68 |
| Water protection (IPx) | IPx8 | IPx8 |
| Body material | — | Aluminium |
| Size & weight | ||
| Length / height | — | 159.5 mm |
| Head diameter / width | — | 36 mm |
| Body diameter / depth | — | 25.4 mm |
| Weight | — | 221 g |
| Modes & features | ||
| Brightness levels | 5 | — |
| Switch | Tail switch, Rotary / scroll wheel | Dual switches |
| Tactical tail switch (momentary on) | — | Yes |
| Strobe | Yes | Yes |
| Mode memory | — | Yes |
