Silver-tone stainless steel case, black stainless steel bracelet. Fixed silver-tone bezel. Black dial with luminous silver-tone hands and index/Arabic numeral hour markers. Minute markers on the tachymeter track around the outer rim. Analog display. Date aperture at 6 o'clock. Chronograph sub-dials: 30-minute and 60-second counter, plus a pulsation indicator for measuring beats per minute. Breitling Calibre B01 automatic mechanical movement with approximately 70 hours power reserve. Scratch-resistant sapphire crystal. Screw-down push-button crown. Transparent sapphire case back. Round shape, 42mm diameter. Fold-over clasp with safety lock. Water resistant to 100 meters/330 feet. Includes chronograph function, date display, analog hour and minute hands, tachymeter capability.