Quality Lens Prisms: BAK4 prism, FMC lens are used, which ensures superior light transmission and brightness. Easy Usage: monoculars is available to connect tripod and smartphone(both not included) for shooting, convenient adjustable in zooming by hand wheel, to see a target. Well-built Monoculars: ultra-compact lightweight monoculars, with zinc alloy housing, features rugged construction and daily water-resistance. Wide Application: it is suitable for bird watching, ball games, concerts, watching wildlife and scenery, etc. to see this wonderful world. Specifications: Material: Metal #43; Rubber Color: Black Magnification: 10X-300X Eye Lens Diameter: 12mm Objective Lens Diameter: 25mm Field of View: 4.4/2.1 View Angle: 2.0-3.5 Exit Pupil Distance: 40mm Item Size: 12.8*4*4cm / 5.03*1.57*1.57in Package Weight: 153g / 5.39oz Package Size: 13.7*5.7*5.5cm / 5.39*2.24*2.16in Note: Monocular telescope set only, other accessories in the pictures are not included. Due to manual measurement, there may be deviation, please in kind prevail. Due to lighting or other reasons, the picture and material object may slightly differ. Packing List: 1 * Monocular Telescope 1 * Carrying Bag 1 * Hand Strap 1 * Cleaning Cloth