Sig Sauer ZULU 10 HDX binoculars utilize SIG SAUERS proprietary OIS Optical Image Stabilization technology and HDX lenses that deliver a full-resolution image. OIS Scan Mode delivers the perfect solution for general observation, whether you're gridding hillsides or trying to locate a specific target. The OIS Target Mode increases stability up to 50% more, allowing the user to stay locked on target with ease. The ZULU10 HDX features Image Stabilization electronically cancels out shaking and vibration; HDX-Glass to enhance light transmission, resolution and definition afield; user selectable modes; Scan Mode and Target Mode. Target mode increases image stabilization by up to 50%; locking diopter ring; three position adjustable eyecups; IPX7 waterproof and fog-proof rating and can be mounted to tripod using the standard threaded adapter insert.