BARSKA Colorado Reverse Porro Zoom Binoculars Includes carrying case and neckstrap Fully Coated (Blue) Optics 30mm objective lens. Field of view 189ftat10X, 105ftat30X, 63mat10X, 35mat30X Close focusing diststance 32.8/10. Eye relief 14mmat10X, 12mmat30X Limited Liftetime Warranty