Omega 234.10.39.20.01.001 Seamaster 300 - 60th Anniversary Master Chronometer, limited edition to 3557, 23410392001001, brushed and polished stainless steel case on a stainless steel bracelet, automatic Omega Co-Axial Master Chronometer caliber 8806, 55-hour power reserve, resistant to magnetic fields over 15,000 gauss, black matte dial, vintage luminescent markers, black aluminum bi-directional bezel, sapphire crystal, solid caseback, water resistant to 300m, diameter: 39mm, thickness: 14.1mm. Like new with original box, leather watch roll, strap-change tool, additional leather strap, and papers