Nitecore Headlamp NU21 Speed Yellow 360 Lumens

The Nitecore NU21 is an ultra-lightweight, rechargeable headlamp designed for runners, campers, and outdoor enthusiasts. With a maximum output of 360 lumens and a beam distance of 58 meters, it provides reliable hands-free illumination. The built-in 500mAh Li-ion battery offers up to 37 hours of runtime on Ultralow mode, and the USB-C charging port ensures quick and convenient recharging. The headlamp features two high-performance white LEDs and one auxiliary red LED, with multiple modes including white (High, Mid, Low, Ultralow) and red (Constant, Flashing). The reflective, breathable headband enhances visibility and comfort during night activities. With an IP66 water resistance rating and 1-meter impact resistance, the NU21 is built to withstand tough conditions. The Speed Yellow color adds a vibrant touch.

Advantages

Ultra-lightweight at only 44g including headband, making it barely noticeable during use. Dual button interface allows easy mode switching and lockout to prevent accidental activation. The red LED preserves night vision and is ideal for map reading or signaling. USB-C charging is fast and universal, eliminating the need for separate batteries. The 100° flood beam provides wide, even illumination for close-up tasks.

Suitable for

• Trail running and night jogging
• Camping and hiking
• Emergency preparedness
• DIY and repair work
• Reading or hands-free tasks in low light

Key specifications

• Max output: 360 lumens
• Max beam distance: 58 meters
• Peak beam intensity: 850 cd
• Max runtime: 37 hours (Ultralow mode)
• LED: 2x white, 1x red
• Battery: Built-in 500mAh Li-ion
• Charging: USB-C, approx. 1.5 hours
• Water resistance: IP66
• Impact resistance: 1 meter
• Weight: 44g (with headband)
• Color: Speed Yellow

Recommendations

For optimal performance, fully charge the headlamp before first use. Use the lockout mode when storing to prevent accidental activation. The red mode is excellent for preserving night vision; switch to red when reading maps or navigating in the dark.