While inspired by a long line of DEFY divers from 1969 onwards, the DEFY Extreme Diver is as modern as they come. Its singular and highly intricate design serve to enhance its depth-defying performance, which was conceived to take on extreme conditions where ice, water and mist present a host of challenges. Its 42.5mm angular case is crafted in titanium, a metal that not only boasts a significant weight-to-strength ratio but is also highly resistant to corrosion from salty seawater. The case is equipped with a helium escape valve for saturation diving. Above the fixed dodecagonal bezel, the ceramic unidirectional rotating bezel features grooved edges for a better grip when operating – even with gloves on. The bezel is engraved and filled with Super LumiNova and bright colours for effortless reading underwater where light is scarce. The oversized screw-down crown feature is protected by titanium crown-guards on either side. Just like the historical DEFY A3648 from 1969, the DEFY Extreme Diver is rated to 600 metres (60 ATM) of water-resistance, which happens to be 1’969 feet – a symbolic number for the DEFY diver. It meets the ISO 6425 requirements for professional diver watches, which include ISO 764 for paramagnetism as well as ISO 1413 for shock-resistance, making it a comprehensive diver’s watch suited to the most demanding conditions.