Advanced technology meets sophisticated style in the Khaki Aviation Converter. A bi-directional, rotating slide-rule bezel makes critical calculations and conversions with ease; and the most advanced anti-magnetic hairspring alloy yet invented, NivachronTM, ensures precision in any environment. Perfect for the modern pilot or urban jetsetter, the 42mm sleek black dial covers an H-10 automatic movement with 80-hour power reserve. Caliber H-10. Automatic. Case size 42mm. Dial color Black. Case material Stainless steel. Brown Calf leather strap. Pin buckle. 22mm buckle width. Coating PVD black. Crystal Sapphire. 20mm lug width. 80-hour power reserve. Water Resistance 10 bar (100 m) /145 psi (328 ft). Ref# H76625530.