Winchester Supreme Binoculars supply accurate color saturation combined with reduced weight to meet the needs of today's demanding hunters and birdwatchers. High quality BAK4 prisms with high density (HD) glass Fully multi-coated lenses Silver coated phase correcting prism lenses for higher light transmission Wide Band objective and eyepiece lens coatings High performance PPS thermoplastic chassis Nitrile NBR / PVC protective rubber armoring Twist up eyecups for use with or without eyeglasses Nitrogen filled and sealed optical system for fog and water-resistance Knurled focus adjustment knobs for a secure grip Lens covers, cleaning cloth, chest harness, padded case and user manual