26.60 mm x 17.30 mm x 4.07 mm (height) curved (6 to 12) rectangular sapphire crystal, generic (not original), to fit Franck Muller®.
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Franck Muller®. Franck Muller® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.