The Montblanc 1858 Automatic Chronograph 0 Oxygen The 8000 watch has an automatic movement inside of a 42mm stainless steel case. The black ceramic bezel rotates bi-directionally and features the cardinal directions. The dark gray glacier patterned dial includes a chronograph function. It is protected by sapphire crystal. The stainless steel bracelet is secured by a deployant clasp. Water resistant to 100 meters.