An identical lone 4-car set is also operated by the Tosa Kuroshio Railway.

[3] The trains use stainless steel car bodies,[4] and are powered by SA6D125-H engines.

[5] The tilting system uses active pendular suspensions.

[6] The prototype TSE ("Trans-Shikoku Experimental") set was introduced in 1989, and was the recipient of the 1990 Laurel Prize.

[4] The TSE prototype set was withdrawn from revenue service in March 2018.