Ulysse Nardin Marine Chronometer Torpilleur 1183-310/40. Caliber UN-118 COSC-certified automatic movement with 60 hours power reserve. Oversized blue coloured seconds-hand in bottom sub-dial. White dial with roman numeral, and date window at the 6 o’clock position. 42mm stainless steel case and bezel. Sapphire crystals on top & exhibition back. Water resistant to 50M. Black alligator strap with deployment clasp. Ulysse Nardin Performance Certificate included.