Omega 331.50.42.51.02.001 Complete Details: A tribute to the original Omega Speedmaster watch from 1957, with clean-cut designs and straight lugs presented on a brown alligator strap: This watch features: Brushed/Satin finished 18kt yellow gold case with polished finished beveled edges. Brushed finished bezel with engraved & black filled Tachymeter Scale. Dial: Flat silver main dial. Recessed silver sub-dials with a fine concentric circular pattern finished rims & flat center Applied yellow gold toned index hour markers with luminescent fill. Printed black minute/seconds & fractions of a seconds track. Yellow gold toned hands, the hour & minute hands with luminescent fill. Chronograph Stopwatch functions: Large central seconds hand counter. Minute & hour counters are combined into a single sub-dial located at the 3 o'clock position. The hour hand is of orange aluminum & the minute hand is polished steel - both with luminescent fill. Small continuous running seconds hand sub-dial located at the 9 o'clock position. Date window displayed at the 6 o'clock position. Slightly domed sapphire crystal. Movement: Omega caliber 9300, beats at 28,800 vph, contains 54 Jewels & has an approximate power reserve of 60 hours - thanks to its twin barrels mounted in series. Column-Wheel Chronograph - column wheel