Multi-coated optics ensure superior light transmission and brightness This product has dual focus function (front and rear adjustable zoom) One-handed operation Powerful, ultra-compact, super lightweight Objective: Objective or front lens diameter. The larger the objective, the more light enters the binoculars and the brighter the image Magnification: 10-90x25 Field of vision: 0.5M / 3000M Field of view: 5.8ã Eye lens diameter: 12 mm Objective diameter: 25mm Monocular size: (108-192) × 32 mm Prism type: BaK4 Weight: 108g Material: all metal Color: black. Specifications: Multi-coated optics ensure superior light transmission and brightness This product has dual focus function (front and rear adjustable zoom) One-handed operation Powerful, ultra-compact, super lightweight Objective: Objective or front lens diameter. The larger the objective, the more light enters the binoculars and the brighter the image Package Included: 1 x 10-90x25 monocular telescope 1 x cleaning cloth 1 English user manual 1 * Lanyard 1 * Telescope package