Equipped with a glacier-patterned grey dial, the Montblanc 1858 Iced Sea Automatic Date gives the impression of exploring the depths of a glacier where all minerals have remained frozen in time for millennia. Inspired by the Mer de Glace, this icy texture was created using an almost forgotten ancient technique called gratté-boisé. This 41 mm model features an interchangeable black rubber strap with a grey contour that can be easily swapped for a stainless steel bracelet without visiting a store or using any tools. It can also be adjusted on the wrist during a diving session. Compliant with the ISO 6425 standard for scuba diving, this watch is water-resistant to 300 meters and has luminescent markers that can be read in low light conditions.