Its performance characteristics speak for themselves: 25-50X WW ASPH. with a subjective field of view of more than 60? throughout the entire zoom range, ensuring that Leica enables viewing experiences that are unique on this scale. Its interchangeable bayonet mount features an integrated automatic eyepiece lock that fixes all eyepieces securely to the scope. Thanks to the construction of the optical system, the eyepiece's focal length is now also independent of the 65mm or 82mm scope being used, and is retained when eyepieces are changed. The eyepiece has rubberized control elements and comfortable rotating eyecups, which significantly increases viewing comfort. As a result, the eyepiece provides optimum grip and is easy to handle even when wearing gloves. The eyepiece is also waterproof to a depth of 5m / 16.5 ft., and also achieves top marks in the prevention of internal fogging thanks to its sophisticated nitrogen filling.