The NU21 lightweight rechargeable headlamp is an ideal choice for both runners and outdoorsmen. Its unibody optical lens system is specifically designed to emit a uniform and soft light, capable of reaching a maximum brightness of 360 lumens, with a range of up to 63 yards. This makes it particularly suitable for night running and route finding. The NU21 offers versatility with four brightness modes, as well as emergency SOS and beacon functions. Additionally, it can switch to dual red LEDs, preserving your night vision or serving as a long-lasting signal light. Weighing just 1.55 oz, the NU21 is constructed with lightweight and durable materials. Furthermore, the reflective headband glows in the dark, enhancing your safety at night. With its hollow bracket design and ultra-lightweight headband, the NU21 offers a weightless feel, making it perfect for trail running, jogging, backpacking, and trekking. The NU21 headlamp offers convenient USB-C rechargeability and boasts an impressive maximum runtime of 37 hours on its lowest setting. With its integrated USB-C port, the NU21 can be fully charged in just one and a half hours, ensuring minimal downtime. A power indicator keeps you informed about the battery status, while the lockout mode prevents accidental activation. The headlamp's ultra-low standby power consumption guarantees a ready-to-use experience for 365 days, and its highly efficient constant current circuit ensures a comfortable visual experience. The intuitive dual-button interface places the controls within easy reach, allowing you to focus on your surroundings and enjoy your activities. For added durability, the NU21 is rated IP66 water resistant and can withstand impacts of up to 1 meter. With its three stylish colors, the NU21 offers a splash of style for your gear.