The first-ever sports diving watch for Montblanc, the Montblanc 1858 Iced Sea automatic date features a glacier pattern dial that gives the impression of looking into the depths of a glacier. This glacial pattern dial is inspired by the Mer de Glace - Sea of Ice - the main glacier of the Mont-Blanc Massif. The timepiece comes with a unidirectional bi-color ceramic bezel, an engraved case back, and an interchangeable rubber strap with a fine adjustment system. The timepiece conforms to the ISO 6425 norm for diving watches and is water-resistant to 300 m.