Sig Sauer's Zulu8 HDX binoculars utilize Sig's glass lense apir high definition and high transmission glass for ultra-high resolution and light transmission. The Zulu8 HDX features HDX-Glass to enhance light transmission, resolution and definition afield; locking diopter ring and three position adjustable eyecups; IPX7 waterproof and fog-proof rating and can be mounted to tripod using the standard threaded adapter insert. Includes EVA carrying case.