Single watch with box, IWC, Pilot Series, model: IW500401 The highly popular Dafeng 7-day chain features a 46.2mm black dial with clear and legible digital hour markers, luminous indication, three hands, crafted from stainless steel, an onion-shaped crown, and is equipped with the self-produced woodpecker Cal.51111 automatic movement with a transparent back. It offers a 168-hour power reserve, commonly known as the 7-day chain, and a folding clasp.