Nikon's 14x40 StabilEyes is the world's first dual mode, digitally stabilized marine binocular. This 14 power binocular is optimized for use on boats, in moving vehicles, or in aircraft. Nikon's StabilEyes 14x40 is a professional grade roof prism marine binocular that not only offers vibration reduction both for shake and roll, but that is also fully waterproof and fogproof. By simply using the LAND mode, a user can have a marine binocular that is optimized for hand held use in fairly stable conditions, such as on dry land. Switch to ONBOARD mode for a binocular that is stabilized for use from a boat, airplane, helicopter, train or automobile. The heart of Nikon's StabilEyes is a battery powered system of gimbaled digital servos that are actuated when the mode, (ON BOARD or LAND) is selected. This system is the only one currently in existence with the capability to dampen both common types of binocular destabilization and provide a Pan & Tilt feature that enables a full range of motion while viewing. Unlike many other stabilized products, StabilEyes is optimized as a quality binocular. It is a roof prism design that incorporates precisely cut and polished lenses and prisms. All optical glass elements are treated with multiple layers of anti-reflective compounds for true color rendition, superior detail resolution, and maximum light transmission. Additionally, prisms are phase-correction coated and high reflection mirror coated for the utmost in sharpness and clarity. The Nikon StabilEyes is a central focus design with an adjustable diopter. It has an exit pupil of 2.9mm, a 56-degree apparent angle of view, and a field of view of 209' at 1,000 yards. Eye relief is 13mm, relatively long in consideration of its 14-power magnification. StabilEyes measures 7.3" x 5.8" x 3.4" and weighs 45.8 ounces. It is ergonomically designed with a hand strap and integral finger grooves to reduce user fatigue and aid in operation. StabilEYES is powered by four AA batteries and has a battery power display that blinks when battery power is getting low.