- Eidan subway (now Tokyo Metro), but he worked as a car driving into the system 301 system 103 to cross the JR Tozai Line, it will be replaced by the aging proceeded, 2003 (2003) Year The 800s have appeared in the E231 system.
- Series E231 has been produced as a train and a standard JR East has adopted a body wide, the 800s series E231, but chose the vehicle narrow Similar Series 0 system 209 in response to turn the subway The major feature. Another major difference is not the vehicle, equipped with an antenna in response to IR input, and the other was done outside of speaker is characterized by the ratio has been increased formation of Cars. In addition, the sliding mechanism was adopted through closed automatically.
- Body color is light blue bands to match the color of the lines east and west of the first-line of the now two-tone dark blue and added accent. Today we have been working seven-car train is located 10 East Center, Mitaka vehicles JR.
- Further enhance commuter-type train Series Micro Ace
- The current figure commercialization enhanced wearing a skirt
- Headlights, tail lights, illuminated destination display. Using LED (ON-OFF switch with)
- Equipped with a flywheel power unit
- Corrugated wheel mounted foot brace
- Stainless steel band Blue tint on the vehicle
- Create a new enhanced skirt
- Corrugated wheel mounted
- Revised front geometry
Nakano, Nishi Funabashi → ←
Kuha E231-802 + E231-804P + Moha Moha E230-804 + Saha E231-803 + E231-805P + Moha Moha E230-805 (M) + Saha E231-804 + Moha Moha E231-806P + Kuha E230-806 + E230 -803
- Optional: G0001/G0002/G0003/G0004 interior lights, wide gray with dense micro coupler: F0002
- Accessories: sticker sheets × 1 destinations
( This is a machine translation. Please allow for possible misinterpretations in the text. )