The Omega Seamaster 300 Master Co-Axial has a design inspired by Omega's first dive watch, while it is technically fully up-to-date and packed with Omega's latest inventions and materials, like an in-house, anti-magnetic Master Co-Axial movement and a ceramic bezel insert.Introduced in 2015, the ref. 233.22.41.21.01.001 Seamaster 300 features a stainless steel case paired with a yellow gold bezel and crown. It is fitted with a leather strap.