Omega Aqua Terra 150M Co-Axial Master Chronometer Watch - 38 mm Steel And Sedna Gold Case - Silvery Dial - Blue Structured Rubber Strap - 220.22.38.20.02.001 Hand-Sewn caliber 8500 self-winding movement with

caliber 8500 self-winding movement with automatic winding in both directions to reduce winding time

automatic movement with chronograph central second hand

44mm brushed titanium case

caliber 9616 MC manual-winding movement with blued-steel sword-shaped hands

Omega Aqua Terra 150M Co-Axial Master Chronometer Watch - 38 mm Steel And Sedna Gold Case - Silvery Dial - Blue Structured Rubber Strap - 220.22.38.20.02.001 Hand-Sewn caliber 8500 self-winding movement with38 mm stainless steel and 18K Sedna gold case, transparent back, screw in crown, domed scratch resistant sapphire crystal with anti reflective treatment on both sides, silvery dial with a horizontal teak pattern, caliber 8800 self winding Co Axial master chronometer movement with date function, approximately 55 hours of power reserve, blue structured rubber strap with grey lining. Water resistant to 150 m (500 ft).