Keep an eye out with the National Geographic 16 x 32 Performance Roof Prism Binoculars. Use the large rear wheel to keep your feathered friend in focus, and observe his behavior in crystal clarity through the coated BaK-7 lenses. Extended bird-watching sessions in the wild are a breeze, thanks to the lightweight, water-resistant body and lanyard to keep the binoculars at your fingertips while you hike through the brush.