31.00 x 19.90 mm x 0.60 mm (thick), flat mineral, generic (not genuine), crystal with gold trim, to fit Concord®. Using generic crystals may devalue your watch.
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Concord®. Concord® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.