10X42 MAGNIFICATION - See objects 10X closer, with a crystal clear range of view.42mm FULLY MULTI-COATED LENSES - Increase light transmission to allow the most light for the best viewing experience.ROOF PRISM DESIGN - For streamlined shape and durability.BAK-4 PRISMS - Optimize light transmission.TWIST-UP EYECUPS - Adjustable eye cups that twist up and down for comfortable viewing with or without eyeglasses.CENTER FOCUS WHEEL - Adjusts the focus of both binocular barrels at the same time.RIGHT EYE DIOPTER - Adjusts for differences in a user's eyes. Located by the right eyepiece.RUBBER ARMORIN - Provides a secure, non-slip grip, and durable external protection.TRIPOD ADAPTABLE - Compatible with a tripod adapter, allowing use on a tripod or car window mount (Tripod not included).LIFETIME WARRANTY - All Eyeskey Optics products have been covered by a Limited Lifetime Warranty.