29.60 mm x 29.60 mm x 0.90 mm (thick), square 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.