The Vanguard Spirit Plus 8420 8x42 Binoculars provide very high quality and design, along with fantastic quality BaK4 roof prisms, which culminate in an extremely high resolution and quality viewing experience. The Vanguard Spirit Plus 8420 8x42 Binoculars are waterproof, and will provide a clear view under rain, snow or fog. The lenses are fully multi-coated which help provide bright, crisp images with fantastic contrast and true colour reproduction.