Dial diameter: 40 mm. Comes with brushed and polished 904L stainless steel case and oyster bracelet. Mirror material: Anti-reflective and scratch-resistant sapphire. The date can be viewed through the Cyclops lens at 3 o’clock. Blue GMT hands with arrows circle the dial every 24 hours and allow tracking of a second time zone. Unique blue and black bi-directional rotating 24-hour bezel with ceramic ceramic inserts and engraved numerals and indexes. Self-winding movement with 70-hour power reserve. Chromalight lasting blue luminous hands and dot hour markers. The crown is screwed down using a triple-lock triple waterproof system. Screw into the back of the case. Folding Oysterlock with easylink 5mm comfort extension links.