Valter Percussion 382605 Custom Box Cajon, dimension: 47 x 30 x 29 cm, material body: birch 9 mm, front: walnut birch veneer 3.1 mm, rear: 6.5 mm birch, four adjustable snare strings in the II-shape, the adjustable sound port on the back allows the bass sound in pitch and volume adjust, the supplied Valter damping mat allows to influence the sustain, including damping mat,