| Oris reference numbers are so called "speaking numbers" . Please check the attached PDF to explore what they say. Ref. 01 733 7730 4124: Matt case, matt horns, matt black dial, uni-directional rotating circular matt black ceramic bezel. Ref. 01 733 7730 4134: Matt case, polished horns, glossy black dial, uni-directional rotating polished black ceramic bezel. Ref. 01 733 7730 4154: Matt case, polished horns, matt black dial, uni-directional rotating circular matt black ceramic bezel |