45 mm, rocker push-buttons. back, sapphire crystal with anti-reflective coating, skeleton dial with metal applique super-luminova-filled numerals, calibre BR-CAL.313 automatic movement with hours, minutes, small seconds at 3 o'clock, skeletonised date at 6 o'clock, chronograph: 30-minute counter at 9 o'clock, central seconds, tachymeter scale on the flange, perforated black rubber strap, steel with black rubber overmoulding pin buckle. Water resistant to 100 metres.