SUB 300T Aquamarine MB
The DOXA SUB 300T Aquamarine is a professional Swiss automatic dive watch with a vibrant turquoise dial and unmistakable underwater character. Its robust 42.5mm stainless-steel case is fitted with a scratch-resistant sapphire crystal and highly luminous details for exceptional visibility.
Water-resistant to an impressive 1,200 metres, it features a helium release valve, date display and DOXA’s patented unidirectional dive bezel. A 38-hour automatic movement and classic Beads of Rice bracelet with a ratcheting wetsuit extension complete this high-performance diving watch.
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Rooted in Purpose, Engineered for performance
DOXA Diving Watches
Since its founding in 1889 by Georges Ducommun in the heart of Le Locle, DOXA has carved out a distinctive place in Swiss watchmaking—defined by innovation, precision, and purpose-driven design. From its earliest achievements, the brand demonstrated a forward-thinking approach, most notably with the patented 8-Day DOXA calibre in 1907. This breakthrough didn’t just elevate watchmaking standards—it found its way into the dashboards of Bugatti racing cars, before becoming a trusted instrument across automotive, aviation, and maritime industries.
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Rugged functionality with refined craftsmanship
DOXA’s pioneering spirit reached new depths in 1967 with the launch of the iconic SUB collection. Engineered specifically for professional divers, it introduced the now-signature orange dial for unparalleled underwater legibility, alongside a unidirectional bezel designed to calculate no-decompression dive times—features that would go on to influence an entire category of tool watches.