Great Barrier Reef Limited Edition IVBack to the Reef Meet the Great Barrier Reef Limited Edition IV, a 2,000 piece limited edition based on the Aquis Date and inspired by the pioneering work of Reef Restoration Foundation. Behind its beautiful gradient blue dial is our Caliber 400 five day automatic. This year, we are launching the fourth watch of our Great Barrier Reef Limited Edition series as a part of our long standing commitment to the Australian Great Barrier Reef, the worlds