Up for sale is a PO 43.5 mm . This watch has been gently worn a couple times is in excellent condition, and very well taken care of ,keeps perfect time and operates perfectly . 2016 model .8900 series . The bottom cardboard flap of the outer cardboard box has come off . I did not want to tape it as I wasn't sure if the person who buys it would want that . The wooden display box is MINT . S/N 87883286 $3275 - Paypal payment . Ships USPS Priority Mail Free - Ins. extra . Watch sell new for around $4500 - Black Dial - Date Feature - Helium Escape Valve - Anti-Magnetic Feature - 60 Hour Power Reserve - Self Winding Automatic Master Chronometer Movement - Omega Caliber 8900 - Vibrations Per Hour: 25,200 - Jewels: 39 - 5 Year Warranty - Guaranteed Authentic - Certificate of Authenticity - Manufacturer Box & Manual - Brushed with Polished Stainless Steel Case - Black Leather Strap with Crocodile Pattern & Rubber Lining - Scratch Resistant Sapphire Crystal - 600 Meters / 2000 Feet Water Resistant - 43.5mm = 1 5/8" Case, 7" Adjustable Strap - Sapphire Crystal Exhibition Case Back - Uni-Directional Rotating Bezel - Luminescent Hands & Hour Markers - Screw Down Crown - Deployment Buckle