6061 aviation grade aluminum, CNC lathe hand-built, surface oxidation. T6 lamp beads, low power consumption, high brightness, long service life. Digital circuit design, current stability. IP-65 waterproof rating, waterproof and dustproof, able to adapt to a variety of outdoor environments. Nano-coated lenses, can achieve 98% light reflectivity and light transmittance. Two fixed brackets, free to install. USB charging, can be recycled. Specification: Material:6061 Aluminum; Light Source Material:T6 Lamp Beads; Reflective Cup:Aluminum Vacuum Reflector Cup; Surface Treatment:Hard Oxidation; Working Time:High Light About 4h; Lighting Range:200-300m; Lenses:FCL Antireflection Film Nanometer Lenses; Battery:2 x Built-in 18650 Battery; Weight:248g; Light body Size:10.5*5*2 cm; Light Mode:High Light, Middle Llight, Weak Light; Waterproof:IP-65 Waterproof; Package includes: 1 x Bicycle headlight; 1 x USB Cable; 2 x Bracket; 2 x Gasket