The Swarovski CL Companion 10x30 Binocular 58248 features impressive optics that deliver smooth, high-contrast images. Swarovski's SWAROBRIGHT phase-correcting coatings applied to their premium roof prisms eliminate color fringing and aberrations for enhanced color fidelity and contrast, while their SWAROTOP coatings on the other optical surfaces maximize light transmission, transmit neutral and natural color fidelity, and improve contrast and clarity. The outer lens surfaces are further coated with Swarovski's SWARODUR coatings, which offer scratch resistance and allow oils, saps, and water to bead off. This not only helps to keep the surfaces clear, it makes cleaning them easier. This model comes with the Northern Lights accessory package, which includes a sheep's wool felt field bag and a leather strap. Swarovski CL Companion Features a 10X Magnification a Compact Roof Prism a Short Bridge Design a Swarovski Optical Coatings In the Box a Urban Jungle Field Bag & Strap a Lens Covers a Eyepiece Cover a Warranty Card