TAG Heuer Watch Aquaracer Professional 300 GMT Rubber WBP5114.FT6259. Raise the bar and overcome your limits underwater with this blue-dialed TAG Heuer Aquaracer Professional 300, designed for the daring. Coupled with a blue rubber strap as durable as it is stylish, this 42 mm watch, driven by the Calibre TH31-03 movement, is your ultimate ally on land or at sea.