Genuine Adec®, 17.36 x 15.47 mm plastic cylinder crystal, Adec® crystal reference A54-38130S, fits Adec® case reference 4-940172.
* 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.