The fourth generation of the Omega Seamaster 300M was introduced at BaselWorld 2018, marking the return of the wave-dial and the introduction of the Co-Axial Master Chronometer caliber 8800. It is available in a number of variations; reference 210.20.42.20.03.001 has both case and bracelet done in a combination of stainless steel and yellow gold. Both dial and bezel insert are blue.
