The 8x magnification guarantees a steady image. The combination of 125 m (368 ft) field of view and precise distance metering makes the 8 x 42 a compact, all-around companion. The housing is made of cast aluminum, not only to reduce weight but also for its special robustness. It is filled with nitrogen to eliminate fogging-up of the lenses. The precise processing typical for Leica guarantees that a LEICA GEOVID BRF remains fully operational even during inclement weather conditions - even down to five meters deep in water (16.5 ft). Its folding lines and the ergonomic design make the Geovid extraordinarily compact and space-saving. The way it fits in your hand is a feature that you will continue to notice, even after many ventures out in the field.