Oyster Perpetual Retail Rates The scaled-down OP variations, 28mm, 31mm, and 34mm, operate on Caliber 2232, the self-winding movement with 55 hrs of ability reserve and patented Syloxi hairspring for improved resistance to magnetism. Conversely, the greater 36mm and 41mm Oyster Perpetual watches rely upon Caliber 3230, released in 2020 https://jamesq578mer8.blogunok.com/profile