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NITECORE NU21 360 Lumen Ultralight Rechargeable Headlamp
Nitecore NU21 Headlamp Lightweight Rechargeable Headlamp

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Price: $29.95

Availability: Usually Ships in 24 Hours
Product Code: FL-NITE-NU21

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  • Max output of 360 lumens with 63 yard throw
  • Dual button interface for easy mode switching
  • Red light output for preserving night vision
  • Lockout mode to avoid accidental activation
  • USB-C rechargeable for easy charging

Included in the Box

  • Nitecore NU21
  • Headband
  • USB-C Charging Cable

Designed for the Outdoors

The NU21 lightweight rechargeable headlamp is the perfect companion for runners and outdoorsmen alike. Its unibody optical lens system is specifically designed for reflecting a uniform and soft light that can emit a max brightness of 360 lumens that can reach up to 63 yards, making it perfect for night running and route finding. The NU21 offers versatility with four brightness modes, as well as emergency SOS and beacon. Alternatively, switch to the dual red LEDs and protect your night vision or for a long-lasting signal light. Its ultra-low standby power consumption provides a 365-day ready experience while its highly efficient constant current circuit guarantees a comfortable visual experience.

Ultra Lightweight

Weighing at just 1.55 oz, the NU21 is designed with materials to make it as light as possible while also being durable and resistant to low temperatures. The headband itself is reflective and glows in the dark to help keep you safe at night. Its hollow bracket design and ultra-lightweight headband provide a zero sense of weight, making it perfect for trail running, jogging, backpacking, and trekking.

Rechargeable and Durable

The NU21 has a built-in rechargeable battery that can achieve a maximum runtime of 37 hours on its lowest setting. With an integrated USB-C port, the NU21 fast charges to full in only one and a half hours. A power indicator tells you when it's time to charge while lockout mode prevents accidental activation. The intuitive dual-button interface puts the controls right at your fingertips so you have more time to enjoy the surroundings. Ready for the outdoors? The NU21 is rated IP66 water resistant and has an impact resistance of 1 meter. With its three stylish colors, the NU21 offers a splash of style for your gear.


LEDWhite and Red LED
Maximum Brightness360 lumens
Peak Beam Distance63 yards
Peak Beam Intensity840 cd
IP RatingIP66
Impact Resistance1 m


High360 lumens2 hr
Mid170 lumens3.5 hr
Low60 lumens8 hr
Ultralow6 lumens37 hr
SOS360 lumens~
Beacon360 lumens~

Constant-On5 lumens26 hr
Slow Flashing10 lumens~
Nitecore NU21
Average Rating: Average Rating: 4 of 5 4 of 5 Total Reviews: 4 Write a review »

  0 of 0 people found the following review helpful:
1 of 5 He hates it April 8, 2024
Reviewer: Pete Butts from Huntsville, TX United States  
Bought it for a friend. He finally admitted it was the worst headlight he has ever had. Probably the last purchase from Nitecore. See my other review, if they actually post them ....

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  0 of 0 people found the following review helpful:
5 of 5 Nice lite October 11, 2023
Reviewer: Thomas Caimano from Walworth, NY United States  
Bright, lightweight, I like the yellow.  Good price

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  0 of 0 people found the following review helpful:
5 of 5 A really great light July 5, 2023
Reviewer: Kevin Holcomb  
These are really great lights. Light, compact, with a good build quality. The operation of the light takes time to get used to if you familiar with the NU 25. The double strap system is a little fussy to get in place. The only improvement I would recommend is going to a singe strap system.

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  0 of 0 people found the following review helpful:
5 of 5 quickly and easily found what I was looking for July 2, 2023
Reviewer: Anonymous Person from Arlington, VA United States  
The title says it all

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