Automatic self-winding mechanical movement, El Primero 3620 calibre with power reserve feature. Brushed black ceramic case and bezel. Skeleton dial design featuring luminous silver/black hour markers and hands, minute markers on the outer rim, a sub-dial at six o'clock for seconds/centisecond display (1/10th of second increments), round shape, 41mm diameter, sapphire crystal glass with anti-scratch treatment, black ceramic strap equipped with folding clasp. Water resistant to 100 meters / 330 feet.