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- Onsight 375 vs NU31
Black Diamond Onsight 375 vs Nitecore NU31
What Onsight 375 does better (1) and where NU31 wins (4) — every spec side by side.
vs
4.2Brightness & throw6.4
7.6Battery & charging7.2
5.0Build & durability5.2
Why is Onsight 375 better than NU31?
- Water protection (IPx)IPx7 vs IPx6+17%
Why is NU31 better than Onsight 375?
- Beam distance (ANSI FL1)85 m vs 145 m+71%
- Maximum output375 lm vs 550 lm+47%
- Maximum runtime100 h vs 147 h+47%
- Weight135 g vs 96 g+41%
Specifications
Side by side
| Light output | ||
| Maximum output | 375 lm | 550 lm |
| Peak beam intensity | — | 5,260 cd |
| Beam distance (ANSI FL1) | 85 m | 145 m |
| Light source | LED | LED |
| LED & beam | ||
| Number of LEDs | — | 4 |
| Battery & charging | ||
| Battery | Built-in Li-ion / Li-Po | — |
| Battery capacity | — | 1,800 mAh |
| Maximum runtime | 100 h | 147 h |
| Rechargeable | Yes | Yes |
| USB-C charging | — | Yes |
| Battery level indicator | — | Yes |
| Build & durability | ||
| Protection rating | — | IP66 |
| Water protection (IPx) | IPx7 | IPx6 |
| Submersible to | — | 2 m |
| Body material | — | Aluminium |
| Size & weight | ||
| Head diameter / width | — | 130 mm |
| Weight | 135 g | 96 g |
| Modes & features | ||
| Strobe | — | Yes |
| SOS / beacon | — | Yes |
| Red light | — | Yes |
| Lockout | — | Yes |
| Colours | Black | — |
