329.30.43.51.02.001 Omega. The Omega Speedmaster Co-Axial Master Chronometer Chronograph 329.30.43.51.02.001 is a stunning timepiece that boasts both style and functionality. The watch features a 43mm stainless steel case with a blue anodized aluminum bezel and a tachymeter scale. The stainless steel crown is easy to use and adjust, while the silvery dial with silver counters is both elegant and practical. The leaf-shaped hands and Arabic numerals are rhodium-plated, and the dial features a unique "spiral" track pattern beneath the numbers. The dial is printed with three distinctive timing scales in a 1940's "snail" design, including a tachymeter scale, a pulsometer scale, and a telemeter scale. The watch performs a range of functions, including hours, minutes, seconds, tachymeter, small seconds counter, chronograph, chronometer, pulsometer, anti-magnetic, time zone function, and telemeter. The Omega logo is located below the 12 o'clock position, adding to the watch's stylish design. The self-winding mechanical movement is powered by a Calibre 9908 and has a power reserve of approximately 60 hours. The case is 12.8mm thick and has a transparent case back, while the sapphire crystal protects the front and back of the watch. The stainless steel bracelet with a folding buckle is both comfortable and secure, while the watch is water-resistant up to 50m. Overall, the Omega Speedmaster Co-Axial Master Chronometer Chronograph 329.30.43.51.02.001 is a fantastic choice for anyone looking for a high-quality and sophisticated timepiece.