This is a Gregoire Maret signature model with wooden cover specification. It features a more mellow and dark tone. Walnut is used for the cover, finished in a calm design with a sense of quality. And the volume and shape are decided for the purpose of easy to play, easy to fit in hand, also to have a more dark tone, and to have sufficient strength. It is the world's first mass-production model using wooden cover for chromatic harmonica.