Like fingerprints, the wood has a unique veining, making each copy of the Meze 99 Classics unique. Machined in the mass using high precision CNC machines, finished by hand with a light sanding giving them a soft and silky texture, assembled by means of screws and nuts, the solid walnut atria will ensure a perfectly round sound box and balanced. It takes about 45 days to get one perfect earpiece. With cushions in soft PU leather, shape memory foams, a manganese steel hoop, and molded Zinc inserts electroplated, the finish is exemplary.