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 ATX, STX and BTX objective modules offer you unparalleled modularity and unimagined application possibilities. Four objective sizes are available for intensive nature observations: 65 mm, 85 mm, 95 mm or 115 mm.