As a replacement for the class 485 trains, JR West procured the class 683 in multiple series, which can also be used with direct and alternating current. The trains consist of three, five, six or nine cars. The end cars were built with either a streamlined head shape or with transitional doors. Most variants are approved for 130 km/h, only the 8000 series is approved for 160 km/h. A number of vehicles have had their AC equipment removed, allowing them to operate under 1,500 volts DC only and are designated class 289. 