This train bears no relation to the 207 series built by JNR and operated by JR East until 2009.

[3][additional citation(s) needed] The trains were built jointly by Hitachi, JR-West (Goto Factory), Kinki Sharyo, and Kawasaki Heavy Industries.

[7] During the refurbishment program, the interior was fitted with wheelchair spaces, enlarged seat partitions, newly introduced intermediate seat partitions to make way for vertical grab bars, and LED lighting.

External changes include the use of HID headlights, gangway door-mounted wipers, and end car-mounted safety fencing.

[6][8] On 6 April 2022, the 7-car prototype set (F1) was forwarded to Suita General Depot for scrapping.