A new era in the history of spotting scopes in those crucial hunting moments, The modular ATX/ STX/ BTX spotting scope system provides maximum functionality. The objective lens can be changed to complement individual preferences and forms of hunting. The device is operable with only one hand and, if necessary, It can be disassembled and easily transported. Its optical brilliance is based on swaro vision technology and enables you to see perfect images at long range. Box eyepiece Module 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, angled view and separately adjustable eyepieces 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 Optic ATX/STX range. Technical wavelength - 6. 9in/ 174mmWeight - 50. 0oz/ 1420Gfunctional temperature - -13 F to +131 F (-25 C to +55 Storage Temperature - -22 F to +158 F (-30 C to +70 c)submersion tightness - 13ft/ 4M Water depth (inert gas filling)in addition to ergonomic design and innovative technology, all Swarovski products are also distinguished by unmatched quality. Every production step and every individual product is subject to thorough testing for 100% quality prior to delivery. The manufacturer therefore grants the customers An extensive .