Omega Speedmaster Professional Moonwatch Chronograph (31130423001003) manual wind watch, features a 42mm stainless steel case surrounding a black dial on a stainless steel bracelet with folding buckle. Functions include hours, minutes, seconds, chronograph and tachymeter. This watch comes complete with the original box and papers. This is a Limited Edition piece of 1971! We back this watch with a 2-Year WatchBox warranty!