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Close 50m/5atm/167ft Case Back Transparent Band Material Calfskin Leather Color/Finish Black Band Notes Racing style, micro-perforated, white contrasting stitching on top & red stitching on the underside Clasp Push Button Deployant Buckle Clasp Features Push-Button Quick Micro Adjustment Lug Width 20mm Movement Manual Wind – Chronometer Manual Wind Movement: The movement is powered by a thin spiral torsion spring, called the mainspring, which is housed in a barrel inside the movement. The mainspring needs to be wound manually, typically via the crown of the watch. Once the spring is wound the energy from thetension-release of the mainspring drives the movement functions. To ensure uninterrupted operation of the watch, the watch will require rewinding before the mainsprings completely winds down. Most manual-wind watches will have a 35-45 hour power-reserve, yet some might have less & some significantly more, check the specs on each watch to verify the power-reserve duration. Close Complications Chronograph COSC Certified Yes

Case: stainless steel – brushed & polished Crown: stainless steel Bezel: fixed, aluminum Dial: white – lacquered & stepped Hour Markers: applied, black, index, luminous Hands: black, luminous, central hands with lume Seconds hand: sub-dial at 9 o’clock Calibre: Omega calibre 3861, beats at 3Hz/21600 vph, 26 jewels, power reserve of 50 hours (2 days)Watch functions: Chronograph: 12 hour counter sub-dial at 6 o’clock., 30 minute counter sub-dial at 3 o’clock., Large central seconds counter hand.

Mens Omega 310.32.42.50.04.002 Speedmaster Professional Moonwatch Co-Axial Master Chronometer 42mm Watch