An E657 Series limited express train (Courtesy of Sui-setz)

The E657 Series trains will replace the 651 Series and E653 Series trains (Courtesy of Uraken.net)

JR East E657 Series

Operated as the Super Hitachi and Fresh Hitachi on the 
Joban Line

In Service: 2012 - Present
Top Speed: 130km/h (Service)
Acceleration: 2.0km/h/s
Length:
21500 mm (End cars)
20500 mm (Middle cars)
Width: 2946mm
Consist/Formation: 6 motorized cars + 4 trailer cars (10 Cars)
Electric System:
1500V DC/20000V 50Hz AC through overhead wires
Number produced: 160 cars (Planned)

The E657 Series is a limited express-type electric multiple unit designed by JR East to replace The E653 and 651 Series trains on the Joban Line limited express routes.

The 651 Series was revolutionary at the time of its introduction in 1989, but by the late 2000s, it was starting to show its age. JR East decided to develop a new design that would replace it and eventually the E653 Series as well.

JR East based the new design on the E259 Series operated as the Narita Express but gave it a different body design with a closer resemblance to the E653 Series. End cars and deluxe green cars were given full-active suspension to provide a smoother ride.

To cater to the many business men and women that use the Joban Line limited expresses, JR East gave the new E657 Series wireless internet equipment. This coupled with power outlets for laptops means passengers can stay connected even on the move.

The E657 Series has replaced the 651 Series in service as the Super Hitachi and is scheduled to also replace the E653 in service as the Fresh Hitachi.