The 1372mm-gauge 1.5kV dc trains will feature rotating seats, which can be arranged longitudinally for normal daytime operations or in a forward-facing 2+2 configuration for reserved-seat evening commuter services from Shinjuku to Keio Hachioji and Hashimoto.

The trains will be equipped with LED lighting, LCD passenger information screens, free Wi-Fi, and at-seat power-sockets. Each car will be equipped with a multi-functional area for wheelchairs and pushchairs.

The train's regenerative braking system will be used to charge batteries, which will supply onboard systems and can also be used to provide traction power for limited operation without power from the overhead catenary.

Keio railway 5000 interior