The Bushnell Legend Ultra HD 10x42mm binoculars feature a precision MIL-Hash reticle system and premium BaK-4 roof prisms for exceptional optical clarity and tactical ranging capabilities.Bushnell Legend Ultra HD 10x42mm Binoculars with MIL-Hash ReticleBaK-4 roof prism construction for superior light transmissionFully multi-coated optics for enhanced brightness and contrastWaterproof design with durable black aluminum housing15.20mm eye relief and 4.20mm exit pupil diameterLightweight at 13.20 oz for extended useIdeal for tactical applications hunting surveillance and outdoor activities where precise distance estimation and crystal-clear optics are essential.