The Swift Audubon 8.5x44 Porro Prism is a high-performance binocular. With a wide field of view, close focus, long eye relief, and a light weight, Swift has included all the features you desire. On a cloudy or rainy day, you will appreciate the increased light transmission from the fully multi-coated optics and the waterproof protection. The Swift Audubon binocular is covered by the Swift Premier 25-year warranty.
Optical Features
Fully Multi-coated Lenses
Increase light transmission with multiple anti-reflective coatings on all air-to-glass surfaces.
BaK-4 Prisms
Optimize light transmission.
Construction Features
Porro Prisms
Generally offer a rich depth of field, wide field of view, and three-dimensional image.
Rubber Armoring
Provides a secure, non-slip grip.
Multi-Position Adjustable Eyecups
Twist up and down for comfortable viewing with or without eyeglasses.
Center Focus Wheel
Adjusts both binocular barrels at the same time.
Right Eye Diopter
Adjusts for differences in a user's eyes. Located by the right eyepiece.
Design Features
Waterproof
Optics are sealed with O-rings to prevent moisture, dust, and debris from getting inside the binocular.
Fogproof
Barrels are filled with nitrogen gas to inhibit internal fogging.
