Magnesium Alloy Body: Lightweight, durable frame that will last a lifetime and handle use in the field. BaK-4 Prisms with Phase and Dielectric Coatings: Increased light transmission through the prism system for brighter images. Increased contrast and resolution. Wide Field of View: Quickly acquire the subject being viewed. Follow your subject more easily, with less need to move the binoculars. Ergonomic Design Fully Multi-Coated Optics: Increased light transmission for brighter views and more resolution. 6.5' Close Focus: Detailed, up close observation of subject in close proximity. Metal Multi-Stop Twist Up Eyecups: More durable with a longer life than plastic eyecups. Multiple stops for correct positioning of the eyes. Tripod Adaptable: Attach your TrailSeeker to a tripod for extended viewing sessions.