Nitecore NU21 Running Headlamp – Ultralight 360 Lumen USB-C Rechargeable with White and Red LEDs (Sticker Included, Yellow)

Overview

Meet the Nitecore NU21 Running Headlamp, a compact, versatile light built for night-time runs and outdoor exploration. Weighing less than 2 oz, it delivers up to 360 lumens of bright foreground illumination, helping you see the path ahead without weighing you down during sprints or long treks.

Designed for changing conditions, the NU21 pairs a primary white LED with four brightness levels plus SOS and Beacon modes, along with an auxiliary red LED for discreet signaling or nighttime awareness. This combination supports a range of activities—from fast trail intervals to quiet night walks—without overpowering your surroundings.

Key features

• 360 lumens max for clear visibility in the dark.
• Ultralight design—less than 2 oz on your head.
• White LED with four brightness levels, plus SOS and Beacon modes.
• Auxiliary red LED for signaling or low-visibility tasks.
• Reflective, glow-in-the-dark headband enhances nighttime visibility.
• Hollow bracket design and ultra-lightweight fit provide a near-zero sense of weight.
• IP66 water resistance and rugged construction for outdoor use.
• USB-C fast charging recharges to full in about 1.5 hours; battery status indicator helps manage care.
• Runtime up to 37 hours on a full charge, depending on mode.
• Includes: NU21 headlamp, adjustable headband, USB-C cable, and a Nitecore sticker.

Durability and design

The headband is designed to stay in place with a reflective surface that glows in low light, aiding visibility without looking flashy. A hollow bracket reduces bulk while maintaining strength, and the headlamp is rated IP66 against water and dust. A impact resistance rating of up to 1 meter provides additional peace of mind on uneven trails.

Power and charging

• USB-C charging delivers quick restarts after short downtime.
• A battery status indicator keeps you aware of charge levels.
• On a full charge, you can expect up to 37 hours of runtime, depending on brightness and mode.

In the box

• Nitecore NU21 headlamp
• Adjustable headband
• USB-C charging cable
• Nitecore sticker

Real-world use cases

Trail runners may appreciate the bright beam and quick charge times after sunset. Joggers will benefit from the red LED for subtle signaling, while hikers and backpackers can rely on the long runtimes for extended evening treks. The reflective headband and glow-in-the-dark accents aim to boost situational awareness without overwhelming other people on shared trails.