[2][4] The 06 series set operated on Tokyo Metro Chiyoda Line services, with through running to and from Toride on the JR East Joban Line.

[3] Passenger accommodation consisted of longitudinal seating throughout.

[3] Built by Kawasaki Heavy Industries,[5] the single ten-car set was delivered in December 1992, and entered service in March 1993.

From January 2015, the set was removed from regular service.

[4] It was moved to Shinkiba Depot in August 2015,[4] where cutting up commenced in September of the same year.