This marks the first time that Calibre 6R55 has appeared in the Prospex collection. The new watches are further enhanced to ensure water resistance to 300m, a first for the Prospex collection’s non-saturation diver’s watches. A change in the location of the date window from the three o’clock position to the space between four and five o’clock now allows a more symmetrical design and more space to be filled with Lumibrite, ensuring high legibility even in dark conditions.