Oyster Perpetual Retail Prices The lesser OP versions, 28mm, 31mm, and 34mm, run on Caliber 2232, the self-winding movement with fifty five hrs of ability reserve and patented Syloxi hairspring for enhanced resistance to magnetism. Conversely, the bigger 36mm and 41mm Oyster Perpetual watches rely upon Caliber 3230, introduced in https://cordellg429wza8.jasperwiki.com/user