This SEVENFRIDAY P-Series features a stainless steel case and bezel with black PVD treatment and yellow gold PVD highlights. The P2/02 has a stainless steel animation ring with roughed matt black PVD finish and 5N yellow gold central ring. This watch has a black interface comprised of 5 layers finished alternately matt and circular with 5N yellow gold highlights. As with all our SEVENFRIDAY P-Series watches the engine is an open balance wheel on Miyota 82S7 which has a 40 hour power reserve.