40.5 mm TAG Heuer Monaco 24 Calibre 36 chronograph automatic watch with fine-brushed / polished steel case, "soft touch" blue alligator strap, blue dial, beveled sapphire crystal, "Monaco Twenty Four" inscription, "Advanced Dynamic Absorber" system, annular oscillating mass, see-through exhibition case back, and Swiss automatic movement. C.O.S.C. chronometer for ultimate precision certified by the Swiss Office of Chronometry.
The unique, wide open sapphire case back shows the exceptional oscillating mass resembling a racing wheel and the famous C.O.S.C. Calibre 36 beating at 36,000 beats per hour.