Omega Speedmaster Reduced ref 3539.50.00 is a contemporary edition of the legendary Moonwatch but with a 39mm case. It boasts a similar aesthetic as its larger counterparts with a stainless steel finish a multi-link bracelet and black dial and Tachymeter bezel. It also boasts a calibre 3220 self-winding movement with chronograph functions and a 40-hour power reserve. The incredible 500-kilometer Tachymeter bezel and chronograph functions can be used by the wearer to calculate impressive speeds making it a favorite among professional drivers. Also referred to by avid collectors in-the-know as the Reduced II the ref. 3539.50.00 features an improved design with a higher depth rating a better clasp and a cleaner dial.