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  • Nitecore NU25 Triple Output USB Rechargeable Headlamp with Ultralight Headband
  • Nitecore NU25 Triple Output USB Rechargeable Headlamp with Wide Headband
  • Nitecore NU25 Triple Output USB Rechargeable Headlamp with Ultralight Headband
  • Nitecore NU25 Triple Output USB Rechargeable Headlamp with Wide Headband
  • Nitecore NU25 Triple Output USB Rechargeable Headlamp with Wide Headband
  • Nitecore NU25 Triple Output USB Rechargeable Headlamp with Wide Headband
  • UL headband colors
  • Nitecore NU25 UL Headband Only includes Mounting Bracket
  • Nitecore NU25 Triple Output USB Rechargeable Headlamp
  • Triple output, compact design, USB rechargeable
  • 360 lumen output, 266 ft (81 m) beam distance
  • 3 LED sources - main, red, auxiliary white
  • 100˚ wide-angle flood
  • Red light preserves night vision
  • High CRI auxiliary white light
  • High CRI for more vivid, natural color
  • Constant illumination without flickering - easier on your eyes
  • 4 brightness levels, 3 sources, 3 special modes
  • Specifications
  • Compact & Lightweight
  • 60˚ tilt
  • Ultralight design
  • Micro USB charging
  • Integrated battery equal to 3 AAA batteries
  • Over 500 recharge cycles
  • Rechargeable Li-ion battery is environmentally friendly
  • Fully functional while charging
  • Battery power indicator
  • Lockout to prevent turning on in pocket or pack
  • Fliexible printed circuit heat dissipation
  • IP66 Impact Resistant to 4.9 ft (1.5 m)
  • Silicon strip keeps sweat out of your eyes
  • Features

Nitecore® NU25 Triple Output USB Rechargeable Headlamp

    • 3 LEDs – Main, Aux White, Red
    • Brightness up to 360 lumens, runtime up to 160 hours
    • Main LED has 4 brightness levels + 2 rescue modes
    • Red LED preserves night vision
    • High CRI auxiliary white LED for more natural color
    • Integrated Li-ion micro-USB rechargeable battery
    • Plug into a power bank battery to recharge
    • Featherlight – 1.17 oz (33.0 g)
    • Exclusive UL headband


    Nitecore® NU25 is a triple output USB rechargeable headlamp. The main LED has four brightness levels up to 360 lumens and a runtime of up to 160 hours on low plus two rescue modes. A red LED preserves night vision and an auxiliary high CRI white LED is great for reading. With our exclusive UL headband it’s light as a feather at just 1.17 oz (33.0 g). And recharge by simply plugging into a power bank. A thru hiker favorite.

    NU25 has a micro-textured reflector providing 100˚ wide-angle flood illumination for outstanding night vision. The light tilts down up to 60˚ for reading or close-up work. The wide elastic headband is comfortable and highly adjustable to fit your head, hat, or helmet. Our optional UL headband reduces weight with full adjustability and functionality.


    In addition to the main light, NU25 also has two auxiliary lights – red and white. The red LED helps preserve night vision and won’t blind your friends. Use low during star gazing or night photography, high for gear organizing or doing camp chores, or caution for a repeated short red flash.

    The auxiliary white light uses a neutral white LED with high CRI ≥ 90 for more vivid, natural color and reduced eye strain. It’s great for short-range illumination, like reading a map. CRI (Color Rendering Index) is a measurement of how colors look under a light source as compared with sunlight. The index is measured from 0-100, with a perfect 100 indicating colors under the light source appear the same as they would under natural sunlight.


    The headlamp has two buttons – Power and Red (R). For low light, press Power once. Within 3 sec, repeatedly press Power to cycle from low>medium>high>off. Hold down Red to immediately turn off or after 3 sec, press either button to turn off. Alternatively, for medium, press Power twice, and for high press Power three times. Hold down Red to turn off. To enter turbo mode, with the light turned on in any mode, hold down Power for 1 sec, and hold down Red to turn off.

    You can also access two rescue modes, SOS and location beacon. SOS repeatedly flashes SOS in Morse code (. . . ––– . . .) The location beacon repeatedly flashes a single short flash. Hold down Power for 3 sec to enter SOS mode. Pressing Power within 3 sec again will change to beacon mode. After 3 sec, press either button to turn off.

    For auxiliary white, hold down Power to turn on and hold down Red to turn off. For auxiliary red, press Red once for low, then within 3 sec, repeatedly press Red to cycle from low>high>caution>off. Hold down Red to turn off.

    Press both buttons at the same time to lockout NU25 and prevent the light from turning on while in your pocket or pack. A red indicator blinks once to indicate lockout. Press both buttons again to reactivate the headlamp and enter low mode.

    LED Mode Output (lumens) Turn On Turn Off
    Main Low 1 Press POWER Once Hold down RED
    Medium 38 Press POWER Twice Hold down RED
    High 190 Press POWER Three Times Hold down RED
    Turbo 360 Light On, Hold down POWER 1 sec Hold down RED
    SOS 360 Hold down POWER 3 sec After 3 sec, Press Either
    Beacon 360 Hold down POWER 3 sec, Press Once After 3 sec, Press Either
    Auxiliary White - 20 From Off, Hold down POWER 1 sec Hold down RED
    Auxiliary Red Low 0.9 From Off, Press RED once Hold down RED
    High 13 From Low, Press RED once Hold down RED
    Caution 13 From High, Press RED once Hold down RED


    NU25 has a built-in, long-lasting 610 mAh Li-ion rechargeable battery that holds power equal to three AAA batteries yet is much more sustainable. An intelligent protective charging circuit and a Micro USB connection make it easy to recharge. Since you probably already carry a spare battery to charge your phone, there’s no need to worry about running out of power or replacing batteries, just plug into a power bank, wall charger, computer, or car (USB cable provided). The light maintains full functionality while charging.

    To see how much battery power is left, with the light turned off, hold down the Red switch for 1 sec and release. The button will flash 3 times if you have more than 50% power, 2 times if you’re below 50%, and 1 time if you’re below 10%. Plug it in and an indicator light lets you know when the charge is complete. It takes approximately 2 hours to fully charge the battery. A rubber cover protects the USB port from dirt and moisture.

    Charging State Indicator Light
    Charging Steady Red
    Charging Complete Steady Green




    LED Mode Output (lumens) Runtime (hours) Beam Distance ft (m) Beam Intensity (cd)
    Main Low 1 160 12.5 (3.8) 3.7
    Medium 38 8 89 (27) 190
    High 190 5 200 (61) 950
    Turbo 360 0.5 266 (81) 1650
    SOS 360 - - -
    Beacon 360 - - -
    Auxiliary White - 20 6.25 18 (5.5) 7.5
    Auxiliary Red Low 0.9 68 - -
    High 13 7.75 13.1 (4) 4
    Caution 13 13 - -


    Main LED: CREE XP-G2 S3 LED

    LED Color Temperature

       Main LED: 6300K, Cool White

       Auxiliary White LED: 4500K, Neutral White

    Color Rendering Index (CRI)

       Main LED: CRI ≥ 70

       Auxiliary White LED: High CRI ≥ 90

    Battery: Built-in rechargeable Li-ion, 610 mAh

    Lighting Modes

       Main LED: Low/Medium/High/Turbo/SOS/Beacon

       White Auxiliary: Medium

       Red Auxiliary: Low/High/Caution

    Beam Pattern: 100˚ wide-angle flood

    Body: Polycarbonate, impact resistant

    Tilt: 60˚

    Switch: Top Power and Red buttons, rubber

    Charging Connection: Micro USB, rubber cover (USB cable provided)

    Charging Time: 2 hours

    Dimensions, Light (LxWxH): 2.19 x 1.36 x 0.91 in. (55.5 x 34.6 x 23.2 mm)

    USB Cable Length: 3.3 ft (1 m)


       UL Headlamp Total1.17 oz (33.0 g) with built-in battery

       Wide Headlamp Total: 1.85 oz (52.5 g) with built-in battery

       Light with Mounting Bracket: 1.00 oz (28.3 g) with built-in battery

       UL Headband0.17 oz (4.8 g)

       Wide Headband: 0.85 oz (24.2 g)

       USB Cable: 0.79 oz (22.5 g)

    Impact Resistance: 4.9 ft (1.5 m)

    Ingress Protection Rating: IP66, complete dust protection and high-pressure water jet resistant


       1x Light with integrated USB rechargeable Li-ion battery

       1x Wide Headband, Black/White

       1x Micro USB to USB charging cable

       Optional: 1x UL Headband, choice of colors*

       *Nitecore packaging will be opened to install UL headband on mounting bracket prior to shipment. To use both UL and wide headbands, purchase an extra mounting bracket.


    User Manual

    Nitecore NU25 User Manual



    • Very bright light, to avoid eye injuries, DO NOT stare directly into the light and DO NOT shine the light directly into the eyes of others.
    • Keep away from children to avoid injury.
    • DO NOT use if battery is damaged to avoid fire or explosion.
    • Charge in or on a fire-proof surface to avoid possible injury. DO NOT charge unattended.
    • Charge only at temperatures between 32-113°F (0-45°C) to avoid permanent damage and possible fire or explosion during charging.
    • Recycle or dispose of properly according to local regulations at end of life, DO NOT dispose in fire or incinerator as battery may catch fire and explode.

    In no event shall Litesmith, LLC be liable for any direct, indirect, punitive, incidental, or special consequential damages, to property or life, whatsoever arising out of or connected with the use or misuse of its products.

    Write your own product review

    Showing reviews 1-10 of 45 | Next

    1. Great functionality!  star rating

      Posted by Unknown on 16th May 2020

      Perfect fit & functionality. Highly recommend to decrease weight! Thanks!

    2. Best thing I could find  star rating

      Posted by Jason McGrath on 30th Apr 2020

      I have a handful of headlamps, and I think this one beats all of them for your typical 3-season backpacking usage. The litesmith band is arguably more comfortable than the stock band, and is super easy to use. I've learned a lighter headlamp means you don't have to cinch it down as tight on your head. After fiddling with so many "one button" headlamps and having to relearn them on every trip, I am in love with this light's two button approach. Finally, it's rechargeable, and will even work while connected to a charger.

    3. Excellent lightweight headlamp  star rating

      Posted by Jim on 29th Apr 2020

      The Nightcore NU 25 is the best headlamp I have ever owned. It is so lightweight and is multifunctional. It operates with only two buttons and has multiple levels of both white and red lights. You can even use the two buttons to lock the light off so it does not turn on accidently while in your backpack. It only takes two hours to change the Li-ion battery.

    4. Very Light  star rating

      Posted by Unknown on 18th Mar 2020

      The previous headlamp I used was heavy and felt like I had a weight on my head while I was running. I don't notice this one at all when I run and haven't had any problems with it.

    5. dream headlamp  star rating

      Posted by Laurel on 15th Mar 2020

      Has all the features you could want at just over one ounce. The litesmith band is comfortable. Rechargeable, bright, good run time. This one is a no brainier.

    6. Great Headlamp  star rating

      Posted by Bradley K Felix on 14th Mar 2020

      I think the Litesmith converted SUL lamp is more comfortable than the regular wide strap. The NU25 is just the right size and brightness for backpacking. I like the swivel feature and the separate red button. Easy to use, easy to charge, comfortable; couldn't ask for more.

    7. Super bright, compact, just perfect!!!  star rating

      Posted by HLS on 7th Mar 2020

      Love this product. A colleague had one and showed it to me when I was describing what I needed for the darkly lit path I sometimes take home, when leaving later from the office. Rode home with it for the first time and WOW! It did the job and beyond! Thanks.

    8. Best UL Headlamp  star rating

      Posted by Rose Brown on 6th Mar 2020

      Exactly what I was looking for in an UL Headlamp. It has its own white and red light switch so it is easy to operate. What I love about this head lamp is that you can lock or turn off the headlamp so it won't turn on in your pack and run down the battery. It is easy to pack and the UL band stays on nicely. The headlamp and UL strap weighs at 1.12 ounces. I highly recommend this headlamp.

    9. Day hiker and camper  star rating

      Posted by Michael on 19th Jan 2020

      This NU25 is extremely light. It makes my older Black Diamond AAA headlamp, or my mini maglite that I used 20 years ago backpacking, feel like bricks in comparison. It also is extremely packable and takes up next to no space in my ditty sack. I love the way you can get an idea of how charged it is. The locking mechanism is simple and I haven't had an issue with it turning on in my pack. The red LED's really are worth it if you wake up before your partner or don't want to destroy your night vision. Ease of use is definitely a big +.

      I was initially worried about the UL headband being uncomfortable, but heard enough positive reviews to sway me into purchasing it from litesmith. I have not been disappointed by it at all. It's comfortable on the head, stays in place, and is so light I barely notice it. It's definitely a worthwhile upgrade over the standard strap that comes with the NU25.

    10. Fantastic Alternative Headband for the Nitecore NU 25  star rating

      Posted by Ray on 18th Jan 2020

      This should absolutely be a no brainer for anyone who purchases the Nitecore NU25 Headlamp. The strap that comes stock with headlamp is extreme overkill and simply isn't warranted for a 1 ounce headlamp. The stock Nitecore strap doubles the weight of the headlamp, and takes up valuable space in a backpack. With the Litesmith unit, I can take two headlamps for the same weight as a single one with the stock Nitecore strap. The Lightsmith comes with the same attachment as the Nitecore so you merely remove the Nitecore and attach this. Again, if you want to shave some weight and some space, do yourself a favor and get this strap...between the light and the strap, my scale shows 1.1 oz....just about as perfect as one can get for ultralight backpacking. Suggest getting one of the brighter colors make it easier to spot in the waning light of day

    Showing reviews 1-10 of 45 | Next

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