[1] The two-car trains were rebuilt from 2015 from former Tokyo Metro 01 series six-car trains, by adding two single-arm pantographs and new KW206 "efWing" carbon-reinforced plastic 1,067 mm (3 ft 6 in) bogies built by Kawasaki Heavy Industries.

[1] As of 1 April 2016[update] two two-car sets (numbers 35 and 36) are in operation, formed as follows with one motored car ("Mc") and one non-powered trailer car ("Tc").

[2] Passenger accommodation consists of longitudinal bench seating.

[1] Former Tokyo Metro 01 series driving cars 01-136 and 01-636 were sold to the Kumamoto Electric Railway in February 2015.

[3] The modified two-car set entered service on 16 March 2015.