Adapted from the Ultra Deep, which made history by reaching the deepest place on Earth in 2019 Seamaster heritage with 8912 calibre movement Water resistant to 600 bar (6000 metres) 45. 5mm O-MEGASTEEL case with O-MEGASTEEL bracelet Grade 5 titanium caseback with laser-engraved Sonar emblem REACHING NEW DEPTHSThe Ultra Deep made history when it reached the deepest place on Earth during the Five Deeps Exhibition in 2019. Adapted from that record breaking model, this unique collection has been tested in real ocean conditions, is water resistant to an impressive 600 bar, and comes with an extra diver extension for the strap. Meeting the ISO 6425: 2018 standard for saturation diverswatches, this remarkable timepiece can perform at new depths. UNRIVALLED PRECISIONThis 45. 5mm watch is presented in an O-MEGASTEEL case, with a bracelet also crafted from O-MEGASTEELa new, high performance stainless steel alloy offers greater polish and shine, as well as superior strength. The lacquered di