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- NU21 vs Buster 400 HL
Nitecore NU21 vs Sigma Buster 400 HL
What NU21 does better (0) and where Buster 400 HL wins (2) — every spec side by side.
vs
2.8Brightness & throw4.3
5.4Build & durability8.8
Why is NU21 better than Buster 400 HL?
NU21 has no measurable advantages in this pair.
Why is Buster 400 HL better than NU21?
- Maximum output360 lm vs 400 lm+11%
- Water protection (IPx)IPx6 vs IPx8+33%
Specifications
Side by side
| Light output | ||
| Maximum output | 360 lm | 400 lm |
| Peak beam intensity | 840 cd | — |
| Beam distance (ANSI FL1) | 58 m | — |
| Light source | LED | LED |
| LED & beam | ||
| Number of LEDs | 2 | — |
| Battery & charging | ||
| Battery | Built-in Li-ion / Li-Po | — |
| Battery capacity | 500 mAh | — |
| Maximum runtime | 37 h | — |
| Rechargeable | Yes | — |
| USB-C charging | Yes | — |
| Battery level indicator | Yes | — |
| Build & durability | ||
| Protection rating | IP66 | — |
| Water protection (IPx) | IPx6 | IPx8 |
| Submersible to | — | 2 m |
| Impact resistance (drop) | 1 m | — |
| Body material | Plastic / polymer | — |
| Size & weight | ||
| Weight | 44 g | — |
| Modes & features | ||
| SOS / beacon | Yes | — |
| Red light | Yes | — |
| Lockout | Yes | — |
| Colours | — | Black |









