Headlamp Nitecore NU21 360 Lumens Midnight Shadow — compact rechargeable headlamp, 360 lm output

The NU21 lightweight rechargeable headlamp is designed for runners and outdoor enthusiasts who need a compact, reliable light. Its unibody optical lens system produces uniform, soft illumination with a maximum output of 360 lumens and a beam reaching up to 58 m. The lamp includes dual red LEDs for preserving night vision or serving as a long-lasting signal, and offers four brightness modes plus emergency SOS and beacon functions. The NU21 features ultra-low standby power consumption for a 365-day ready state and a constant current circuit for comfortable, stable light.

Advantages

Compact and lightweight construction suitable for running and hiking. Rechargeable 500 mAh lithium-ion battery with USB-C charging provides long runtime and easy recharging. IP66 protection ensures resistance to dust and powerful water jets. Multiple lighting modes including high-efficiency white light, dual red LEDs, SOS and location beacon increase versatility for different outdoor situations.

Key specifications

• Model: NU21
• Light output: 360 lumens
• Max beam distance: 58 m
• Battery type: Lithium-Ion rechargeable
• Battery capacity: 500 mAh
• Battery run time up to: 37 hours
• Charging port: USB-C
• IP rating: IP66
• Colour: Midnight
• Special modes: Location Beacon, SOS
• Illumination application: Headlight
• Flashlight series: NU
• Unit net weight: 0.044 kg
• Unit gross weight: 0.1 kg
• Shipping box dimensions (D×W×H): 8.7 cm × 8.5 cm × 5 cm

How to use

Charge the NU21 via the USB-C port before first use until fully charged. Use the main control to cycle through the four white brightness modes and activate SOS or location beacon when needed. Switch to the dual red LEDs to preserve night vision or use as a long-duration signal. Wear the headlamp on the included headband or attach it as specified in the user manual. Observe IP66 protection limits: the device resists dust and heavy water jets but should not be immersed.

Recommendations

For extended outings, fully charge the 500 mAh battery before departure and keep a short USB-C cable in your kit. Use the lower brightness settings to maximize runtime, and activate the red LEDs when maintaining night vision is important.