Introduced in 2005, these watches features a chunkier case design with a broad arrow handset, a new bracelet design, a revised design language on the dial, and increased water resistance - no doubt to complete with the Rolex Sea-Dweller. One of the latest additions of the Seamaster lineage, along with the Aqua Terra line, is the Planet Ocean. This fact alone has made the Seamaster Professional line (as it came to be known) more desirable than their Rolex counterparts to a large portion of the collector community - simply because they don't all look exactly the same. The Seamaster 300 line was Omega's response to the Rolex Submariner when introduced in 1957.įeaturing robust steel cases with a 300 meter depth rating, rotating bezels graduated with dive-timing scales, and a metal bracelet with diver's expansion links, the early Seamaster 300s were not only functional divers that would go on to see use in Her Majesty's Navy, but are arguably one of the handsomest sports watch designs of the past century.Īs it evolved, the Omega Seamaster 300 went on to see numerous evolutionary changes, and nearly innumerable variants in a variety of materials and colorways have been produced in the past 60 years.