Omega Speedmaster Broad Arrow GMT SS / SS
Omega 3581.50.00 Speedmaster Broad Arrow GMT, 35815000, Stainless Steel on a Stainless Steel Bracelet, Automatic, Black Dial with Silver Hour Markers and Luminous Hands, Co-Axial, Date at 6 O'clock, Chronograph, Red Arrow Indicates Second Time Zone, COSC, Small Seconds at 9 O'clock, Diameter: 44 mm, Thickness: 15.4 mm, Sapphire Crystal, Display Back, Water Resistant, Like New with Box and Papers.
More about Speedmaster Broad Arrow GMT SS / SS
This is a stainless steel Omega Speedmaster Broad Arrow GMT, reference 3581.50.00. It has an integral stainless steel Omega link bracelet with a double deployant clasp, and a scratch resistant sapphire crystal. There is a screw-down exhibition sapphire display case back, engraved with "OMEGA – Broad Arrow – Co-Axial – GMT – 100M/330 feet." It has round chronograph pushbuttons and a push/pull winding crown with crown guards. The 44mm diameter solid three-body case, integral lugs, bracelet, and flat bezel with engraved tachymeter scale to 300 UPH, are polished/brushed. The dial is black with applied faceted steel baton hour markers, luminous dot hour indices, and steel Broad Arrow hands with luminous inserts. There is a center sweep chronograph hand and a GMT second time zone hand with a red arrow pointer. There is a 24-hour scale with luminous Arabic numeral markers for only the odd hours, and a perimeter minute/one-fifth second track. There is a date aperture window at the 6 o'clock position, and there are three black silver-rimmed subsidiary dials, including a constant seconds register at 9 o'clock, a 12-hour chronograph totalizer at 6 o'clock, and a 3-minute dial at 3 o'clock. It has a Certified Official Swiss Chronometer (COSC) rating, and it's water resistant to 100 meters/330 feet. It has a 52-hour power reserve at full wind, and the 15.4mm thick case, dial, and movement are all signed. This Omega Speedmaster Broad Arrow GMT, reference 3581.50.00, has a mechanical automatic self-winding Omega Co-Axial column wheel chronograph, caliber 3603 movement. It's rhodium-plated, with fausses cotes embellishment. It's constructed with 37 jewels, a shock absorber device, and a Co-Axial escapement. It includes a monometallic balance that's adjusted to 5 positions, and a self-compensating flat balance-spring. The mechanism oscillates at a frequency of 28,800 vph (4Hz).
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