The Leica Zoom Eyepiece 25x - 50x WW ASPH. demands praise for its incomparable viewing quality. This device is specifically compatible with both the Leica Apo-Televid 65 and 82 Spotting Scopes - providing edge-to-edge sharpness and clarity. This is thanks to high-end aspherical optics, whilst the waterproof and rubber-armoured housing matches that of the Apo-Televid scopes. By doing so, you are afforded a high-end, durable, and functional observational tool that can be used in any and all conditions. It affords a well-rounded 57° to 74° apparent angle of view, complimented by a versatile 25-50x zoom range. The eyepiece features a further rubberised twist-up eyecup for comfortable use by glasses wearers. Measuring just 10.4cm in length and weighing 348g, this eyepiece is a relatively compact and lightweight device that can easily be stored for extended travel. The bayonet mount snaps cleanly and securely into place when mounting to your compatible spotting scope.