Omega Seamaster 300M Chronograph GMT 212.30.44.52.03.001

OMEGA’s sporty Seamaster collection is a tribute to the brand’s maritime legacy. This exquisite example of our renowned watchmaking pays homage to OMEGA’s dive watch heritage and our adventurous pioneering spirit.

This OMEGA Seamaster Diver 300M GMT Chronograph features a matt blue dial with 30-minute and 12-hour recorders and a small seconds sub-dial. There is a yellow GMT hand that matches the yellow 24-hour scale on the dial which makes it possible to keep track of time in a second time zone. The matt blue ceramic unidirectional rotating bezel is mounted on a 44 mm stainless steel case with a helium-escape valve.

The watch is presented on a stainless steel bracelet. This chronograph is powered by the OMEGA Co-Axial calibre 3603.

Reference: 212.30.44.52.03.001

Dated: 2011

Bracelet: Stainless Steel Bracelet

Case Size: 44mm x 17.7mm thickness

Lug Width: 21mm

Case Metal: Stainless Steel

Movement: Omega 3603 - Automatic

Functions: HMS, Date, Helium Escape Valve, chronograph, gmt

Box and Papers: Inner/outer boxes and warranty card

Crystal: Sapphire

Bracelet size: 7.75”

Case has light normal wear. Bracelet has light normal micro wear. Dial, hands, and crystal have no wear. Watch runs within Omega spec.

Founded in 1848 by Louis Brandt in Switzerland, Omega has grown into one of the most respected and innovative names in watchmaking. The brand’s early focus on precision earned it accolades at international observatories and competitions, setting the stage for decades of horological achievement. Omega became the official timekeeper for the Olympic Games in 1932, and in 1969, the Speedmaster Professional—nicknamed the "Moonwatch"—made history as the first watch worn on the lunar surface during NASA’s Apollo 11 mission. Omega’s innovations continued with the introduction of the Co-Axial escapement in the late 1990s, a groundbreaking movement that dramatically reduced friction and improved long-term accuracy.

Omega’s lineup showcases a wide range of iconic models that reflect the brand’s legacy and versatility. The Seamaster, introduced in 1948, is a favorite among divers and famously worn by James Bond since 1995’s GoldenEye, blending technical capability with cinematic cool. The Speedmaster remains one of the most storied chronographs in existence, while the Constellation is known for its refined design and chronometric precision. The De Ville collection offers a more elegant, dress-focused aesthetic, often featuring high-end complications and meticulous finishing. Omega continues to lead with innovations like Master Chronometer certification, METAS testing, and antimagnetic technology—ensuring that its watches are not just beautiful, but built for the demands of modern life.