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- NU21 vs Explore 4
Nitecore NU21 vs Silva Explore 4
What NU21 does better (0) and where Explore 4 wins (1) — every spec side by side.
Why is NU21 better than Explore 4?
NU21 has no measurable advantages in this pair.
Why is Explore 4 better than NU21?
- Beam distance (ANSI FL1)58 m vs 74 m+28%
Specifications
Side by side
| Light output | ||
| Maximum output | 360 lm | — |
| Peak beam intensity | 840 cd | — |
| Beam distance (ANSI FL1) | 58 m | 74 m |
| Light source | LED | LED |
| LED & beam | ||
| Number of LEDs | 2 | 4 |
| 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 | — |
| Impact resistance (drop) | 1 m | — |
| Body material | Plastic / polymer | — |
| Size & weight | ||
| Head diameter / width | — | 100 mm |
| Weight | 44 g | — |
| Modes & features | ||
| SOS / beacon | Yes | — |
| Red light | Yes | — |
| Lockout | Yes | — |
| Colours | — | Grey |
