The Montblanc 1858 Iced Sea Automatic Date, reference number 133628, features a 41mm stainless steel case and a grey glacier-patterned dial, achieved using the gratté-boisé technique. It is powered by the automatic MB 24.17 movement, based on the Sellita SW200-1 a, with a 38-hour power reserve. The watch includes a date function and luminescent markers for low-light readability. It is water-resistant up to 300 meters, conforming to ISO 6425 standards for diving watches. The timepiece comes with an interchangeable black rubber strap and a ceramic bezel.