Just to update for those that dont know-the ??? turned out to be whats known in game as the fitness ring.
Quote:
Fitness- A buff-type ring which adds a small boost to all of your stats. Specifically, it adds about 5 to your dodge and accuracy each CL (50 at CL10), about 50 weight per CL (500 at CL10) and increases your Health and Stamina Regeneration to considerable amounts.
credit to makata for this description.