zmart 8x21 Compact Zoom 1000m HD Mini BAK4 FMC Long 1000m Objective Eyepiece Eye Diopter Porro Roof Field of Bird Outdoor Binoculars, Reach, Foldable,

Magnification: 8x Objective lens diameter: 21 mm Eyepiece diameter: 13 mm Angle of view: 7 degrees Field view: 1000 m Exit pupil diameter: 2.6 mm Eye relief: 11 mm Mini focus length: 2 m Prism: BAK4 Coating: Objective lens: FCM green coating, Eyepiece lens: CM blue coating Focusing system: Center focus As this is an imported product, the packaging may be damaged. Magnification: 8x Objective lens diameter: 21 mm Eyepiece diameter: 13 mm Angle of view: 7 degrees Field view: 1000 m Exit pupil diameter: 2.6 mm Eye relief: 11 mm Mini focus length: 2 m Prism: BAK4 Coating: Objective lens: FCM green coating, Eyepiece lens: CM blue coating Focusing system: Center focus As this is an imported product, the packaging may be damaged.