PAM 00090 The power reserve lets the wearer check the remaining power at any time by the indicator on the dial. This function was developed by Officine Panerai's master watchmakers who created a transmission system connecting the barrel's winding spring and the movement's gear train with the power reserve indicator, which moves as the winding spring transmits the accumulated energy to the movement wheels. The case of the Luminor Power Reserve - 44 mm, made of polished steel, is water-resistant to 30 BAR (~300 metres) and has the characteristic drawbridge: the mechanism was designed by Officine Panerai to protect the crown but most of all to make it waterproof, as it is one of the most delicate parts of a watch when immersed in water. The dial of the Luminor Power Reserve - 44 mm, with a black background, bears the unmistakable Officine Panerai style: large markers, luminescent Arabic numbers and hands, all of which guarantee exceptional visibility under all conditions of use. In addition to the small seconds dial at 9 o'clock and which is constantly moving, the watch also has an arched sector between 4 and 5 o'clock: this is the power reserve indicator, marking off the number of remaining hours of power. Above that is the date indicator, with a magnifying glass inserted in the 3.5-mm thick, non-reflective sapphire crystal. Case Size: 44mm Buckle: Deployant Materials: Steel Dial: Black Movement: Automatic OP IX calibre Water Resistance: 30 bar Complications: Hours, minutes, small seconds, date, power reserve indicator Case Back: Plain Strap : Black alligator Reference #: Pam00090 CALL DURING HOURS FOR PRICING OR EMAIL ANYTIME 480-607-4444