Nitecore NU25 UL - Best Ultralight Design

The Nitecore NU25 UL has earned its reputation as the premier ultralight headlamp, weighing a mere 0.99 ounces while delivering performance that rivals much heavier models. This headlamp generates 400 lumens of brightness with a beam distance of 64 meters, providing sufficient illumination for most trail activities while maintaining minimal weight. The updated version features USB-C charging instead of the previous micro-USB, along with an increased battery capacity of 650mAh that provides 4.2 hours of runtime on high settings. The lighting system incorporates three separate lights: white, red, and high CRI that functions as a floodlight, along with four brightness levels and three special modes including red caution, SOS, and beacon.

The IP66 rating ensures protection against high-power water jets and complete dust resistance, making it suitable for use in rainy conditions. The ultralight headband option further reduces weight while maintaining adequate stability during movement. The straightforward button layout simplifies operation compared to more complex headlamps, with dedicated buttons for different lighting functions. Available in bright yellow, the NU25 UL is less likely to be left behind at campsites. While the battery life doesn't match heavier models, the exceptional weight savings make it ideal for thru-hikers, alpine climbers, and ultralight backpackers who prioritize every ounce without sacrificing essential lighting functionality.