[1] The entire fleet of 6 six-car sets (36 vehicles) was scheduled to be in service by the start of the 14 March 2015 timetable revision.

[2] The fleet of 36 vehicles (6 six-car sets) will be built by Hitachi at a cost of approximately 5.7 billion yen, with styling overseen by industrial designer Eiji Mitooka.

[5] Passenger accommodation consists of longitudinal bench seating with space for wheelchairs or strollers in each car.

[1] The side doors are equipped with passenger-operated open/close buttons, and these are normally available for use between Misakigaoka and Nishi-Karatsu stations on the Chikuhi Line.

[7] A special public preview run was held on 31 January 2015, ahead of the formal entry into service on 5 February.