Orion 51662 Otter 10x42 Waterproof Roof Prism Binoculars (Green) Powerful 10x42 waterproof binoculars ideal for outdoor use in any weather Substantial 6.4 degree field-of-view yields an expansive 10-power window Fully multi-coated optics and BAK-4 roof prisms provide maximum light transmission for bright, sharp views Hardened prism mountings help maintain optical alignment 17mm eye relief provides a comfortable view Powerful 10x42 waterproof binoculars ideal for outdoor use in any weather^ Substantial 6.4 degree field-of-view yields an expansive 10-power window^ Fully multi-coated optics and BAK-4 roof prisms provide maximum light transmission for bright, sharp views^ Hardened prism mountings help maintain optical alignment^ 17mm eye relief provides a comfortable view