The Luminor Power Reserve - 44 mm by Officine Panerai, Ref. PAM 00090 / OP6635, features a sophisticated power reserve function that allows the wearer to monitor the remaining energy via a dial indicator. Master watchmakers have developed a unique transmission system that connects the barrel spring with the movement's gear train, with the indicator reflecting the energy transfer. The polished steel case ensures water resistance up to 300 meters and features the iconic bridge design that enhances crown protection and water resistance. The black dial presents Panerai's signature style with large luminescent markings and Arabic numerals for optimal visibility. In addition to a small seconds sub-dial at 9 o'clock, a power reserve indicator between 4 and 5 o'clock shows the remaining hours of power reserve, while an enlarged date display is positioned at 3 o'clock. This functionality is powered by the exclusive Panerai OP IX caliber, an automatic 13 ¼-ligne movement that is C.O.S.C. certified and equipped with 21 jewels and a 42-hour power reserve. The distinctive Officine Panerai bridges and the movement's oscillating weight further highlight the craftsmanship. Serial number: BB11xxxx Diameter: 44 mm without crown Dial: Black dial Bracelet: Original new Panerai stainless steel bracelet, approximately 20 cm long (never worn) Box: Yes Papers: No