Today, Seiko introduces a new movement in the 6R family with a GMT function and an extended power reserve of 72 hours. The 6R54 calibre is presented in this new Prospex SPB381J1 creation, a modern reinterpretation of the classic 1968 model. The watch is water-resistant to 200 metres, the hands and 12 indexes are equipped with Lumibrite and the unidirectional bezel has a luminous insert. It is presented on a new three-link stainless steel bracelet with a slim profile that provides a solid and comfortable fit on the wrist.