Glass: SapphireCase: Matt polished case, case back and buckle, mirror polished crown, control buttons and bezelStrap: Genuine leatherStrap size: 22 mmCase size: 46 mmWR: 50 m Limited edition: NoThe special AChS-1 watch is a legend of Russian aviation.
. Functions: hours, minutes, small second, central stopwatch, 30 minutes counter, 12 hours counter.0 BLACK MATT For decades, these timepieces have been installed in almost every kind of Russian aircraft and helicopter, including the following: Tu-95MS, Tu-22M3, Tu-160, Il-76, Su-24, Mi-171, Mi-8, Ansat, Mi-38, Mi-28, Ka-52. The AChS combines an ultra-reliable design, resistance to pressure from severe G-forces/fluctuating temperatures, convenient ergonomic engineering.