The Montblanc 1858 Iced Sea Automatic Date watch is their first-ever sports diving watch. Comprised of a sleek dial that gives the impression of looking into the depths of the Mer de Glace - Sea of Ice - the main glacier of the Mont-Blanc Massif. The texture has been created using a traditional ancestral technique called gratté-boisé. Enriched with a unidirectional ceramic bezel, an engraved case back, and an reliable black strap with an adjustment system. The timepiece conforms to the ISO 6425 norm for diving watches and is water-resistant to 300 metres.