The Panerai Luminor Marina 1950 3 Days GMT Power Reserve Automatic 44mm (PAM00321) boasts a 44mm 1950 Luminor case and a sleek black dial. Powering this timepiece is the P.9002 calibre automatic in-house movement, a testament to Panerai's watchmaking prowess. With 29 jewels and a power reserve of 3 days, the movement offers precision and reliability. The PAM00321 features various functions, including hours, minutes, small seconds, seconds reset, second time zone (GMT), date, and a power reserve indicator. The see-through display back, made of sapphire crystal, allows a view of the intricate movement, while the anti-reflective glass over the dial ensures optimal legibility. With a water resistance of 300 meters and a black alligator strap with a brushed steel buckle, the Panerai Luminor Marina 1950 3 Days GMT Power Reserve Automatic PAM00321 is a sophisticated timepiece that combines style and functionality.