Our most compact and affordable binoculars, the B/GA 8x21s are ruggedized for general sporting and field use. Their water-resistant, alloy housings are protected by our standard rubber armor. Features include: Full multicoating and anti-reflection treatment eliminating glare and maximizing light transmission 6061-T6 alloy housing Center focus dial Water resistant High resolution optic system Conventional roof prism design Superior optical glass by Schott Glasswerk, Germany B/GA 8x21 Specifications Magnification 8x Objective diameter 21mm Field of viewat 1,000 yards 298 feet Exit pupil diameter 2.63mm Eye relief 10mm Diopter adjustment -5 to 5 DPT Weight 11 oz