Interchangeable Swarovski Spotting scope eyepieces are flexible to use, come with glass cover (protecting it from dirt and dust), and are essentially watertight. Swarovski eyepiece come with bayonet connector which enables a wildlife or bird watcher to change eyepieces quitetly and easily. This feature is especially important for wildlife watchers and birders because of the easily spooked wildlife. These eyepieces come with automatic safety mechanism guards and protective eyepiece covers. On the outer surface of lenses, Swarovski's proprietary SWAROCLEAN coating is present, making it easier for cleaning the eyepiece lenses. Swarovski 20-60x Zoom eyepiece, Swarovski 25-50x Zoom eyepiece, STX Modular, and ATX Modular spotting scope eyepieces are available at Scopelist.com. Check out the different Swarovski eyepieces and Buy NOW at best price.