Based on the optical excellence of Canon EF camera lenses, the Image Stabilizer Binocular system virtually eliminates the image shake common with high-magnification binoculars. Even when viewing from a non-stationary object like a vehicle or boat, the image is held crystal clear and steady. Ultra-Low Dispersion Glass minimizes chromatic aberrations for exceptional image quality. Extra-long eye relief enables eyeglass wearers to view the entire field. The 8 x 25 compact model is the world's smallest image-stabilizing binocular. All operate on two AA batteries (8x25 operates on CR123A battery, included), sport a water-resistant rubberized covering and come with a a soft case and carrying strap.