Dial diameter: 40 mm, Oystersteel integral middle case, screw-down case back and winding crown, bidirectional rotatable 24-hour graduated bezel. Green and black Cerachrom ceramic inserts, moulded numerals and indexes, winding crown screw-down. Scratch-resistant sapphire crystal, water-resistant to 100 meters/330 feet. Self-winding movement. Functions: hours, minutes, seconds, date, GMT.