Omega Speedmaster Racing Co-Axial Master Chronograph Watch - 44.25 mm Steel Case - Sedna Gold Bezel - Matt Grey Dial - Grey Leather Strap - 329.23.44.51.06.001 Cobra with a remarkable 40-hour power

with a remarkable 40-hour power reserve – a testament to Vacheron Constantin's commitment to horological excellence

5 mm Case Shape Irregular Case Back Solid Case Detail Case Size 35

131/2 self-winding chronograph movement with flyback function

approximately 8 days of power reserve

a 40 x 40 mm masterpiece that seamlessly marries timeless design with innovative functionality

Omega Speedmaster Racing Co-Axial Master Chronograph Watch - 44.25 mm Steel Case - Sedna Gold Bezel - Matt Grey Dial - Grey Leather Strap - 329.23.44.51.06.001 Cobra with a remarkable 40-hour power44. 25 mm stainless steel case with antimagnetic design, transparent back, 18K Sedna gold bezel with silicon nitride ring and tachymeter scale in Ceragold, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, matt grey dial with racing style minute track, caliber 9900 self winding Co Axial master chronometer movement with chronograph and date functions, approximately 60 hours of power reserve, grey leather strap.