- High grade (HG) specification
- Unpowered trailer specification that can be used for adding cars, etc.
- Among the 400 series for long formations, this vehicle is modeled after the mid-term 549-654 series, and reproduces the appearance of a vehicle that has been modified to be air-conditioned and has a cooler installed on the roof
- The taillights are internally fitted, and reproduce the appearance of a small window at the bottom of the passenger door
- The jumper plugs and hoses at the front of the leading car are reproduced as separate parts
- The typhoon is selectable and comes in four types: shutter type, slit type, rotating type, and Niigata type
- The shading unit for the head and taillights is the same as that used in the Kiha 56-200 series The see-through effect around the front of the head is improved compared to the small unit
- Uses a blue color sheet
- The head and tail lights and front display are equipped with a constant-light board and an ON-OFF switch
- The head and tail lights and front display are lit by white LEDs
- The headlights use a color prism to light up in a color close to that of an incandescent bulb
- The front display is interchangeable and comes with printed parts for "express, rapid, local (navy blue background), (white background)"
- The car number, affiliation, and JR mark are selectable and come with a transfer sheet
- Uses a new current collection system and black wheels
- TN coupler (SP) is standard equipment
- Compatible with Interior Lighting Kit Tomix 0733
