Dial diameter: 40 mm, Oystersteel OYSTER ARCHITECTURE monobloc middle case, screw-down case back and winding crown, Oystersteel bezel Bidirectional rotatable 24-hour graduated bezel. Green and black Cerachrom ceramic insert, moulded numerals and indexes, winding crown screw-in, triple interlocking triple water resistance system crystal scratch resistant sapphire, Cyclops lens water resistant to 100m/330ft on date. Movement permanent, mechanical, self-winding, GMT. Second time zone independent quick setting of the hour hand. Functions: hours, minutes, seconds, date, GMT.