Moderate 8x power magnifies views while preserving a generous field of view. HDC fully multi-coated system has abrasion-resistant and anti-reflection properties to protect exterior lens surfaces, and improve light transmission and contrast. Wide 32-74mm interpupillary distance range accommodates use by a wide variety of users especially those with narrow faces like children and adolescents. Dual-hinge design allows optical tubes to fold under the bridge for an ultra-compact form factor when closed to take up less space in packs and pockets. Protective rubber armor provides a slip-resistant grip