Bushnell 24-1028 Excursion 10x 28mm Roof Prism Binoculars Ideal binocular for nearly any weather condition Lightweight composite chassis and streamlined, roof-prism design for ease of use Premium BaK-4 prisms with PC-3 phase coating for outstanding color fidelity and sharpness 100 percent waterproof and fogproof Includes a wide field-of-view, long eye relief, and a large center-focus knob for precise focusing