The Panerai Luminor 1950 Ceramic 8 Days Chrono Monopulsante GMT watch (Ref PAM00317) watch features a 44mm case and bezel crafted from ceramic, a convex sapphire crystal, and a black sandwich dial with luminous indications. Straps are in crocodile or calf leather. The Panerai PAM00317 watch utilizes the manufacture Panerai P2004 caliber, which is handwound and has three mainspring barrels. This movement features an 8-day power reserve, and offers a mono-push chronograph mechanism, a power reserve indicator, and a 24-hour GMT hand. Water resistance is 100 meters.