These solidengineered jumbo binoculars come with dual power interchangeable 20x and 40x magnification eyepieces for you to utilize This binocular comes with BAK4 prism and large semiapochromatic 100mm objective lenses bringing you bright and crystal clear views The jumbo binocular is suitable for long range terrestrial and celestial viewing and performs well under lowlight conditions This observation binocular is an incomparable optical instrument that provides high quality and practical usage Ideal for celestial and terrestrial observations The waterproof and rigid allmetal binocular is packaged in premium foam lined carrying hard cases allowing secure storage and transportation Designed with a rigid all metal body and packaged in a premium aluminum hard case for protection and storage Waterproof construction with a rigid all metal body Dual power interchangeable 20x and 40x eyepieces of high power viewing Multicoated optics coupled with the large 100mm objective lens maximizes light transmission enhancing clarity Large semiapochromatic 100mm objective lenses with high quality BAK4 prisms Ideal for celestial and terrestrial observations and packaged in a premium aluminum hard case for protection and storage