Panerai PAM 504 Radiomir Composite Historic 3 Days, 47 mm.

　　Never Worn complete with box and papers.

　　Panerai describes this watch (and can be found on their official site):

　　IN 2010, OFFICINE PANERAI INTRODUCED PANERAI COMPOSITE, a synthetic ceramic created by the electrochemical process of ceramization of aluminium. Highly resistant and extremely light, Panerai Composite combines optimal technical characteristics and a sporty elegance. This material is the result of research in the field of innovative materials and represents the forefront of a technical evolution that is of fundamental importance for Panerai. The Radiomir Composite 3 Days

　　47 mm has a cushion-shaped, brown, Panerai Composite case that houses a dial of the same colour enhanced by the small seconds dial at 9 oclock and the engraving Radiomir Panerai. The in-house P.3000 hand-wound calibre can be admired through the large burnished sapphire case-back of the Radiomir Composite 3 Days. This calibre has a 3-day power reserve thanks to two barrels connected in series. It has a 16 lignes diameter, large brush-finished bridges with anglage (chamfering) and a variable inertia 13.2 mm balance wheel, which oscillates at a frequency of 3 Hz. The P.3000 calibre also has a device enabling the hour hand to be set in jumps of one hour, so that adjustment does not interfere with the movement of the minute hand or the running of the watch.

　　SPECIFICATIONS:

　　MOVEMENT: Hand-wound mechanical, Panerai P.3000 calibre, executed entirely by Panerai, 16 lignes, 5.3 mm thick, 21 jewels, Glucydur balance, 21,600 alternations/hour. Incabloc anti-shock device. Power reserve 3 days, two barrels. 160 components.

　　FUNCTIONS: Hours, minutes, small seconds.

　　CASE: Diameter 47 mm, brown Panerai Composite with removable wire loop strap attachments (patented). Screw-down winding crown personalised OP.

　　BEZEL: Brown Panerai Composite, integrated into the case.

　　BACK: See through burnished sapphire crystal.

　　DIAL: Brown with luminous Arabic numerals and hour markers.

　　CRYSTAL: Sapphire, formed of corundum, 1.9 mm thick. Anti-reflective coating.

　　WATER-RESISTANCE: 100 meters.

　　STRAP: PANERAI personalised distressed style leather strap and large-size brown Panerai