Size: The ZEISS Conquest HDX Binocular is a premium-level binocular that comes in an 8x42 objective size Optical Design: The optical design holds up to 10 lenses that are carefully matched and indexed ED Glass: The Extra-Low-Dispersion (ED) glass and aspheric lenses greatly reduce chromatic aberration Impact-Resistant: The rugged design with a magnesium frame and full rubber armoring makes the new ZEISS binoculars durable and shockproof, temperature-resistant, and UV light-resistant Special Technology: It uses ZEISSs FieldFlattener Technology, which gives extreme edge sharpness, even at wide fields of view