Bushnell 10 x 43 Elite Binocular Rainguard water-repellent lens coating, XTR technology for maximum light transmission and optimal brightness PC-3 phase coating for color fidelity and clarity of image, Fully multi-coated optics, BaK-4 roof prisms 100% waterproof / fogproof / dustproof construction, O-ring sealed, Long eye relief Rugged yet light rubber-armored magnesium chassis with scratch-resistant powder coat, Center focus Locking center diopter adjustment dial, Quick-connect secure strap and custom-molded case included