"Breitling Aviator 8 Chronograph 43 Curtiss Warhawk" (Ref#: A133161A1L1X1) is driven by a self-winding internal mechanical movement, Breitling B13 movement, 25 jewels and 28,800 vph power. When fully tightened, the power reserve of this watch can be up to 42 hours. Mounted on the watch is a military khaki green fabric strap, which is fastened to the wrist by a pin buckle. Or stainless steel Professional III bracelet. chronowrist.ru