Bushnell NatureView Birder Combo 8 x 40mm Porro Prism Binoculars, Tan Includes instructional CD & field log Lead-free glass 8x magnification, 40mm objective binoculars Fully multi-coated optics and BaK-4 roof prisms for bright, clear, crisp viewing Birding combo includes binoculars, birding CD-ROM, birding field log, carrying case, and deluxe strap Textured center-focus wheel for easy adjustments and rubber armor coating for improved grip and superior protection Fold-down eyecups favor all viewers including eyeglass wearers