The is an electric multiple unit (EMU) train type operated by the private railway operator Choshi Electric Railway in Chiba Prefecture, Japan, since July 2010. The two two-car sets were converted from former Iyo Railway 800 series EMU cars, which were themselves converted from former Keio Corporation 2010 series EMUs built in 1962, and were introduced to replace the Choshi Electric Railway's ageing 700 and 800 series EMU cars. Formations The two two-car sets are each formed of a driving motor (Mc) car and driving trailer (Tc) car as shown below, with the DeHa 2000 cars at the Chōshi end. The DeHa 2000 cars were originally fitted with one lozenge type pantograph. The pantograph on DeHa 2001 was damaged on 20 October 2013, entailing its replacement with a spare single-arm pantograph from 22 October - a first for trains on the line. External livery Set 2001 Set 2001 initially carried the all-over green livery originally carried in its Keio days. Following general overhaul in December 2017, car KuHa 2501 was repainted into a new livery of dark blue and light grey, with car DeHa 2001 remaining in the same all-over green livery it carried from its introduction on the Choshi Electric Railway. Set 2002 Set 2002 was initially painted into all-over cream livery and entered service in July 2010 with advertising vinyls promoting the local Aeon shopping mall. The advertising contract with Aeon for set 2002 expired on 21 November 2012, and from December, the set was returned to service in the cream livery with red bodyside line as carried by the Keio 2010 series EMUs in their later days. Set 2002 was scheduled to run in this livery until 16 September 2013, after which date it received a "90th Anniversary livery", consisting of the addition of black and red paintwork to the non-gangwayed cab end. Following the completion of accident damage repairs in March 2015, set 2002 was repainted in the early Choshi Electric Railway livery of red and beige, returning to service in April 2015. Interior The trains feature longitudinal seating, and are equipped with fare collection boxes at each end for wanman driver only operation. The trains are also the first Choshi Electric Railway trains to be equipped with air-conditioning, although initially it was used only in simple ventilation mode, due to the insufficient capacity of the line's power supply. From late June 2013, however, a static