Omega Seamaster Calendar Automatic 2025 Release Date. Discover the iconic vintage omega® watch seamaster calendar ko 2627, created in 1952 by omega®! Compare watches & purchase securely.

To commemorate the 75th anniversary of the seamaster, omega presented the seamaster summer blue collection, 11 watches in different shades of blue. The seamaster 300 offers everything omega’s dive watches are known for but with a retro flare and a nicely sized 41mm case.