The NITECORE NU05 V2 Ultra Lightweight USB-C Rechargeable Headlamp Mate has a built-in rechargeable Li-ion battery with max runtime up to 47 hours. Equipped with dual white and red light sources, it is available with Red Indicator (Slow Flashing), Red Light (Slow Flashing), Red Light (Quick Flashing), White Light (Slow Flashing) of totally 4 modes and White Light (Constant-on). The body is constructed with solid and durable PC materials with an ultra lightweight and compact design of 11.1g (0.39oz). It is all weather applicable as IP66 rated and 1m impact resistant.