Panerai Luminor 1950 Regatta 3 Days Chrono Flyback Automatic Titanio Watch. 47 mm titanium case, 9.55 mm thick, sapphire back, brushed titanium crown, titanium bezel, black dial with luminous arabic numerals and hour markers, chronograph hour counter at 3 o' clock, seconds at 9 o’clock, central chronograph seconds and minutes