The BTX combines the visual power of both eyes with a revolutionary viewing experience. Swarovski BTX Eyepiece Module Unique with two eyepieces The BTX combines the visual power of both eyes with a revolutionary viewing experience. Crucial subtleties can be seen with the crystal clear optics, with every detail now fully on show. A forehead rest and angled view guarantee comfortable viewing for hours on end. The benefits of binoculars and spotting scopes are combined in the BTX eyepiece module. It presents vivid, true-to-life images and offers the comfort required for long-term observation. The BTX eyepiece module is compatible with all objective lenses in the SWAROVSKI OPTIK ATX/STX range. THROUGH COMPLETELY NEW EYES Taking functionality to a new level: the ATX/STX/BTX spotting scope system combines exceptionally flexible modularity with optical perfection. The objective lens can be changed to suit any viewing situation. Extreme detail recognition at crucial moments thank