Nitecore NU31 Rechargeable LED Headlamp Grey, Blue, or Orange – 550 Lumens

• Lighting Performance: Delivers up to 550 lumens (Turbo) with a maximum beam throw of 145 meters, featuring three light sources: Primary White, High-CRI Auxiliary White, and Auxiliary Red.

• Power & Charging: Built-in 1800mAh Li-ion battery pack providing up to 8 hours on High or 147 hours on Ultralow (Moonlight). Fully recharges via in-body USB-C in about 3 hours.

• Intuitive Controls: Dual top buttons with distinct shapes for easy blind operation, plus a Lockout Mode to prevent accidental activation in pockets or packs.

• Durability: Durable front aluminum housing paired with a lightweight plastic body, featuring an IP66 dustproof and waterproof rating.

Lighting Modes & Runtimes

• Primary White:

  • Turbo: 550 lumens | 5 hours | 145m throw

  • High: 200 lumens | 8 hours | 90m throw

  • Medium: 60 lumens | 38 hours | 46m throw

  • Emergency: SOS & Beacon modes (550 lumens)

• Auxiliary White:

  • Low: 50 lumens | 42 hours

  • Ultra-Low: 6 lumens | 147 hours (High CRI >90 for accurate color representation)

• Auxiliary Red:

  • Constant-On: 5 lumens | 80 hours

  • SOS Flashing: 10 lumens | 50 hours (Preserves night vision)

Dimensions & Weight

• Length: 2.45″ / 62.3 mm

• Width: 1.81″ / 46 mm

• Height: 1.4″ / 35.6 mm

• Weight: 3.37 oz / 95.5 g

Package Contents

• Nitecore NU31 Headlamp (with built-in battery pack)

• Headstrap

• USB-C Charging Cable

• User Manual

Battery Indicator Feature: A short press of the mode button activates LEDs to show remaining power (4 lights = ~100%, down to 1 light = ~25%).