Planet Ocean 600M Omega Co-Axial Master Chronograph 45.5mm on bracelet 215.90.46.51.99.001.This model, with its scratch-resistant sapphire crystal, features a sand-blasted grade 5 titanium dial with Arabic numerals and a date window at the 6 o'clock position. The dial presents a small seconds sub-dial, as well as 60-minute and 12-hour counters on one dial for intuitive reading of elapsed time. Mounted on the 45.5 mm grade 5 titanium case, is the world's premiere grey silicon nitride ceramic beze
