TAG Heuer has expanded its Aquaracer range with a new professional dive watch rated to 500 metres, marking one of the most technically capable entries in the collection’s near 50-year history.

The Aquaracer Professional 500 Date builds on a lineage that dates back to 1978, when the Heuer Reference 844 was introduced as a rugged, all-purpose tool watch. That model laid the groundwork for what would become the Aquaracer line, formally named in 2004 and defined by a set of core features including a unidirectional bezel, screw-down crown and high water resistance.

The latest model increases that capability significantly, offering 500m water resistance alongside a helium escape valve designed for saturation diving. The valve allows trapped gases to safely exit during decompression, a feature typically reserved for watches used in commercial diving environments.

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The 42mm case and bracelet are made from grade 2 titanium, keeping the weight to around 120 grams. The material also improves resistance to corrosion and impacts, important factors for prolonged use in marine conditions.

Two versions are offered, each designed with underwater visibility in mind. One features a blue-accented dial with a gradient wave pattern, while the other uses high-contrast orange details intended to remain visible in low-light or murky environments. The use of orange follows established diving conventions, where colour visibility can be critical for safety and identification.

Inside is the TH30-00 automatic movement, which carries chronometer certification and a power reserve of 70 hours. TAG Heuer is backing the movement with a five-year warranty.

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Each version is limited to 1,500 pieces, with engravings marking the production run. The watches are delivered in a protective case designed to withstand water, dust and impact, and include a backup light.

While positioned as a professional-grade instrument, the release also reflects broader trends in the dive watch segment, where brands continue to push technical specifications while maintaining everyday wearability.