The Omega Seamaster 120 (Ref. 166.027) is a highly regarded vintage diver introduced in 1966 as a more compact and wearable alternative to the Seamaster 300. It is known for its classic 37mm "C-case" design and the reliable Calibre 565 movement.

• Case Size: 37mm stainless steel "tonneau" or "C-case".

• Movement: Omega Calibre 565 automatic movement, featuring 24 jewels and a 50-hour power reserve.

• Functions: Central seconds and a date window at 3 o'clock with a unique "pull-push" quickset date function.

• Dial: Matte black dial with applied hour markers and the iconic applied Omega logo.

• Bezel: Bi-directional rotating black bezel.

• Water Resistance: Originally rated for 120 meters (12 bar), though vintage models should be professionally tested before any water exposure.