Low light night vision binoculars with BAK7 prisms, 50mm objective lens and FMC fully multi-coated glass lenses. The lenses provide excellent control of glare and ghosting. It is easy to see objects in the shadows even when backlit or against a bright background, imaging more vivid colours without dark edges. The Easy Focus High Power Binoculars come with 10-30x zoom magnification and a tripod shakeproof interface, giving you a high definition and large field of view at 235ft/ 1000yds. Corrective optical coatings help to improve colour fidelity and minimise distortion. Diopter system regulates binocular vision imbalances. Smooth, large central focus knob makes it simple to operate and easy to focus