Blue at the bezel, grey at the dial
Reference 210.30.42.20.06.001 separates its colors with unusual discipline. The chrome-grey PVD finish sits over a ZrO2 ceramic dial with laser-engraved waves, while the blue ceramic bezel forms a distinct outer ring. Its white enamel diving scale stays crisp against the blue without asking the dial to carry another strong color.
That is why this configuration stands apart from a blue-dial Diver 300M. The case and bracelet remain stainless steel, the dial reads neutral in most light, and the blue is concentrated where the timing scale belongs. It gives the watch a recognisable front without turning it into an all-blue statement.
The wave engraving matters to that balance. It adds depth as light moves across the grey ceramic surface, so the dial does not feel flat beside the polished bezel. This is a colorway for buyers who want detail in the dial without a large block of blue taking over the front of the watch.













