The Nitecore NU20 Classic is a compact and lightweight headlamp designed for outdoor enthusiasts. With a maximum output of 360 lumens and a beam distance of 109 meters, this headlamp is perfect for camping, trail running, and other outdoor activities. It features a built-in 500mAh Li-ion battery, multiple lighting modes including white and red lights, and special modes like SOS and slow flashing for emergencies. Weighing just 38g, the NU20 Classic is your go-to headlamp for reliable, hands-free illumination.