Nitecore NU25 UL: Illuminate Your Adventure with the Feather-Light Champion

Ultra-lightweight, powerful, durable, versatile headlamp

The world is a place teeming with opportunities, waiting to be explored at the crack of dawn or under a star-lit sky. To seize those moments, to paint those memories, you need tools that keep pace with you, that don't anchor you down. This is where the NU25 UL by Nitecore comes into play.

On the surface, it's an ultra-lightweight, dual-beam headlamp. But scratch beneath the surface, and you’ll find that it’s much more. Weighing in at a mere 45g (1.59oz), it can rightly be called the featherweight champion of the headlamp world. With its lean profile, it's as close to ‘zero sense of weight' as one can get. And that’s just the start.

The NU25 UL uses spotlight and floodlight technology, together throwing a beam of 400 lumens max, with a range of 70 yards. That’s comparable to a pocket-sized sun that shines up your path. But the highlight of this device is the flexibility it offers. You can switch between spotlight, floodlight, or even combine them based on your need. If you want to keep things low-key, there's a red light mode to help preserve your night vision or to act as a signal light.

The design screams sophistication and practicality. The headband, which glows in the dark, is reflective. The hollow bracket is carefully crafted to lighten the load. The lamp is built from PC material, rendering it more durable and resistant to low temperatures. It’s compact, durable, and stylish all at once.

With the NU25 UL, gone are the days of getting lost in the dark or being invisible to pedestrians and vehicles. It ensures your safety, alerting everyone of your presence. It's not just a tool, but a guardian angel guiding you through the darkness.

Its prowess doesn't end there. The NU25 UL is powered by a built-in USB-C rechargeable battery. A full charge can power up to 45 hours of runtime. That's nearly two days of uninterrupted adventure. With the power indicator on top of the lamp, you will always be informed of the battery level. It’s a thoughtful feature that saves you from unexpectedly running out of juice.

To round it all off, the NU25 UL has a lockout mode to prevent accidental activation, and an ultra-low standby power consumption. This means you can leave it on standby for a full year, and it'll still be ready to illuminate your journey.

To sum it up, the NU25 UL is not just a headlamp, but a companion for the road less traveled, for the journey into the unknown. It’s for those who yearn for a life untethered, those who seek adventure, and those who defy the darkness. It's built for the explorers, the nocturnal runners, the early morning hikers, and the dedicated athletes. In a world that never stops, why should you?


  1. Ultra-Lightweight: Weighing in at only 1.59 oz (45g), the NU25 UL is feather-light and unobtrusive, allowing you to forget it's even there during your adventures.
  2. Bright, Adjustable Lighting: With a maximum output of 400 lumens, and the ability to toggle between spotlight, floodlight, and a combination of both, it offers versatile lighting options. An auxiliary red light mode is also available for preserving night vision or signalling.
  3. Long Battery Life: The built-in USB-C rechargeable battery can run for up to 45 hours on a single charge, ensuring you have light when you need it.
  4. Durability and Resistance: Made with PC material, the NU25 UL is durable and resistant to low temperatures, making it suitable for use in various environments.
  5. User-friendly Design: It includes an easy-to-use power button, mode button, and a battery indicator that lets you know how much power is remaining. The ultra-lightweight headband is reflective and glows in the dark, enhancing visibility.
  6. Low Standby Power Consumption: The ultra-low power consumption allows the NU25 UL to be ready even after a full year on standby, adding to its convenience.
  7. Lockout Mode: This feature prevents accidental activation, which is particularly useful during transport or when stored.


  1. Non-Replaceable Battery: The built-in battery cannot be replaced, potentially limiting the lifespan of the headlamp.
  2. Lack of High IP Rating: While it's resistant to weather with an IP66 rating, it may not be fully waterproof and might not hold up in extreme weather conditions.
  3. No Mention of Impact Resistance: There's no information about impact resistance, which is a crucial aspect for outdoor equipment that might inadvertently take a knock during use.
  4. Possibly Over-complicated User Interface: The control interface might be a bit complex for users who prefer simpler, one-button operations.
  5. Inadequate Locking Mechanism: The lockout mode may not be sufficient for preventing accidental activation, especially when the headlamp is stored in a tightly packed backpack.


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