21.00 mm x 21.00 mm x 1.00 mm (thick), square sapphire crystal, curved (12 to 6), 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.