Lightweight Full Sized OpenBridge Binoculars Magnification 10x Power Objective Lens Diameter 50mm Color Green Nitrogen Filled and ORing Sealed Making Them Both Waterproof and Fogproof Great Lightweight Binoculars for Hunting Bird Watching Astronomy Safaris SightSeeing Travel Sporting Events and Other Outdoor Adventures BAK4 Prisms and Fully MultiCoated Optics Ensure Bright Sharp and Crystal Clear Images Feature Extra Long Twist Down Eyecups Tripod Mountable Field of View 304 feet at 1000 yards Eye Relief 17mm Close Focus 131 feet Weight 18 lbs Dimensions LxWxH 525 inch x 675 inch x 20 inch