These binoculars incorporate Canon's unique Image Stabilising technology enabling a steady image even with their powerful 18x magnification. The binoculars are also all weather - water resistant, enabling use even in rain or on a yacht. A range of other features such as the large 50mm objective lens, ensures a bright, clear image and the field flattener used in the eyepiece lens gives excellent edge-to-edge sharpness, making these binoculars suitable for a wide variety of uses including bird watching and stargazing.