29.50 mm x 3.14 mm (thick) flat-top, domed bottom, mineral crystal with bevel, generic (not original) to fit case numbers OS-561M, OS-575M, OS-578M, OS-598M, OS-5086M 103 GC. Using generic crystals may devalue your watch.
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Orient®. Orient® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.