10-30x25 Zoom PC I Features:Compact Binoculars Powerful 10-30x zooming capability Small size, lightweight design for hassle-free portability Contemporary design is sleek and stylish Multi-coated lens for maximum image brightness and contrast Twist up-up/down eyepieces for comfortable viewing UV ray protection for care-free viewing Built-in dioptric correction adjusts to individual eyesight Convenient centre-focus knob for easy and accurate focusin Size WxHxD (mm): 114 x 111 x 48 Weight: 315 g Specifications Type: Porro-prism type binoculars Magnification: 10-30x Objective lens diameter: Ø 25 m Exit pupil diameter: Ø 2.5-0.8 mm Actual field of view: 3.2-1.9° Apparent field of view: 32.0-57.0° Field of view at 1000 m: 56-33 Eye relief: 15-8 mm Diopter adjustment range: Over ±2 m-1 Eye interval adjustment range: 58-70 mm Relative brightness: 6.3-0.7 Closest focal point: 5 m Width (fully extended): 114 mm Height: 111 mm Depth (fully extended): 48 mm Weight: 315 g Optical coating: Multi-coating Lens configuration: 9 elements in 6 groups Other: Adjustable eyepieces (twist up/down) High-index BaK4 prisms UV protectionBox Contents All OLYMPUS binoculars come complete with case, neckstrap and protective lens covers.