Panerai Radiomir S.L.C. 3 Days PAM00425. 47mm steel case which is water resistant to 100 meters. Hand-wound mechanical Panerai P.3000 calibre movement, 16½ 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. Black Vintage Pig dial with luminous hour m arkers, 2.8mm thick sapphire crystal. See through case back. Tan leather strap with steel buckle. The name of this watch refers to the Siluro a Lento Corsa (S.L.C.), the slow-speed torpedo on which the commandos of the Royal Italian Navy rode during their heroic underwater missions, equipped with Panerai watches and instruments. Box and Papers dated September 2013. Our Reference S21956.