Car 11 provides Green car (first class) accommodation, and car 12 provides Gran Class luxury accommodation. Sets are formed as shown below, with car 1 at the Tokyo end. Cars 3 and 7 are each equipped with a single-arm pantograph. The 12-car trains have accommodation in three levels of service: Gran Class, Green car, and ordinary-class cars, with a total seating capacity of 934. Gran Class seating (car 12) is arranged 2+1 abreast with a seat pitch of , Green car seating (car 11) is arranged 2+2 abreast with a seat pitch of , and ordinary seating (cars 1 to 10) is arranged 3+2 abreast with a seat pitch of . AC power outlets are provided for each seat in all three classes. The Gran class seats are supplied by Toyota Boshoku. Car saloons and vestibule areas are equipped with security cameras. Between October and December 2015, luggage racks are scheduled to be added at one end of each of the even-numbered ordinary class cars and also in Green car 11, by removing a pair of seats (1D and 1E). The luggage racks are to cater to the increased number of overseas tourists with suitcases and also passengers with ski and snowboard equipment in the winter season. In December 2011, the "Mainichi Shimbun" reported that JR East was considering developing new E7 series 10-car sets based on the existing E2 series design for use on Hokuriku Shinkansen services. Details of the new trains were formally announced jointly by JR East and JR West on 4 September 2012. The first E7 series train was delivered to Sendai Depot in November 2013, and shown off to the media on 28 November. Night-time testing commenced in December 2013 on the Nagano Shinkansen, with daytime test-running between Nagano and Tokyo starting on 8 January 2014. The design of the logo to be applied to the sides of cars 1 and 12 was officially unveiled in February 2014. The first three trains, sets F1 to F3, entered regular passenger service from the start of the revised JR East timetable on 15 March 2014. The entire fleet of 17 sets, numbered F1 to F17, was delivered by the start of the 14 March 2015 timetable revision, although sets F16 and F17 did not enter revenue service until after this date. In April 2015, JR East announced that it was ordering an additional E7 series set to be introduced from autumn 2015, replacing the remaining E2 series trainsets used on regularly scheduled Hokuriku Shinkansen "Asama" services.