Genuine Adec®, 20.50 x 18.00 mm flat mineral crystal with gold trim, Adec® crystal reference A54-89293, fits Adec® case reference 4-942612, 4-942621.
* 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.