Genuine Adec®, 16.30 x 1.60 mm thick flat mineral crystal with gasket, Adec® crystal reference A54-90195F, fits Adec® case reference 4-394119.
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Adec®. Adec® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.