A darker expression of the Royal Oak Offshore, the 25940SK Rubberclad brings the line's muscular architecture into sharp focus with a 42mm stainless steel case and black dial. The familiar bezel and stainless steel bracelet give this watch the assertive, technical character collectors look for in the Offshore. Its automatic movement drives a chronograph with date. At 14.2mm thick, it wears with the broad, planted stance that defines the model.