Luger - SG Binocular The answer to the challenges of the sea; the SG 7x50 with its built in illuminated compass and integrated range finder, provides reliable assistance in orientation and delivers an incomparably precise image.Objective Lens Diameter: 50mm7 x MagnificationExit Pupil: 7.14mmField Of View (m/1000m): 116mTwilight Factor: 18.71