The Blackhawk Binoculars by Barska feature multicoated BaK-4 lenses that produce crisp, clear views. Compact roof-prism design with center focus wheel. Nitrogen purged and O-ring sealed for 100% waterproof and fogproof protection. Rubber armor provides shock resistance if dropped or bumped. Diamond-cut textured grip provides a secure, nonslip grip even when wet. Includes: carry case, lens covers, neck strap and lens cloth. Manufacturer's limited lifetime warranty. Multicoated BaK-4 lenses produce crisp, clear views Nitrogen purged and O-ring sealed Rubber armor provides shock resistance