Corum Admiral's Cup AC-ONE 45 Tides Watch A277/02401. this is a sea-lovers favorite. The original was created in 1993 twenty one years later Corum has release this beautiful edition. this AC-One Tides has a 45mm Titanium grade 5 case with Double Antireflective sapphire crystal and a sapphire back. It has a blue Dial, Bezel and Rubber Strap. The movement is a CO 277 with a 42 hours power reserve. The functions include Hour, minute, second, date, moonphase and tides coefficient, timing of the next two high tides and low tides, current strength and tidal process indicator. Remarkable time piece, never worn.