Introducing the Corum Admiral’s Cup Seafender 48 Deep Dive, a true professional dive watch. According to the FHS, “Divers’ watches must be water-resistant at 330 ft minimum. They must also feature a time controller and comply with standards provided by NIHS 92-11 (ISO 6425): luminosity, shock resistance, anti-magnetism, band solidity.”

With a massive 48 mm x 18.9 mm solid Grade 5 titanium case, the Seafender 48 can withstand pressure far greater than the ISO 6425 dive watch standard requires. In fact, with a depth rating of 1,000 meters, it is actually ten times better.

A helium escape valve, located in between 9 and 10 o’clock on the case flank, allows the watch to decompress after saturation diving. This is a feature that real professionals need, but is not required under ISO standards.

Corum Admiral's Cup Seafender 48 Deep Dive helium escape valve

A black dial and bold orange luminous markers and hands allow excellent visibility at night, and most importantly, while underwater. A thicker version of Corum’s signature cambered twelve-sided sapphire crystal was used to ensure maximum water-resistance. An interior anti-reflective coating allows a clear view of the dial under all lighting conditions.

The case is brushed, except for the top of the lugs and the crown, which are polished. The massive screw-down crown is signed with the Corum key. The solid titanium caseback is engraved with the edition number, water-resistance rating and Corum logo.

Powering the Seafender, is a COSC-certified, Swiss made, 24-jewel automatic movement that runs at 28,800 vph (4Hz). A 120-click unidirectional rotating bezel allows the wearer to precisely track dive time. A 24 mm wide black vulcanized rubber strap with a titanium buckle and pin keeps the watch securely attached, even while wearing a wetsuit.

The titanium version (pictured) is available in a 200 piece limited edition Ref. 947.950.04/0371 AN15. A black PVD titanium and red gold bezel version is available in a 100 piece limited edition Ref. 947.950.86/0371 AN16.

Posted by:Jason Pitsch

Jason Pitsch is the Founder of Professional Watches. He appreciates good craftsmanship in everything from architecture to automobiles to cameras to clothing. Yet his focus for the past decade has remained consistent on covering just one type: watchmaking.