- The streamlined body shape, full of the sense of speed of the actual train, is reproduced in perfect detail.
- The car number, the Snow Rabbit mark on the car body, and the Hokuriku Express logo are reproduced with beautiful printing.
- Roof equipment such as lightning arresters and antennas are accurately reproduced as separate parts. From this production run onwards, the whistle on the leading car will have a whistle cover.
- Intermediate couplings are equipped with KATO coupler close-coupling type (bogie mounted) as standard. The driver's cab side of the intermediate leading car is equipped with KATO coupler retractable close-coupling type (PAT.) as standard.
- A power unit with a reputation for stable running is used.
- Head/tail lights illuminate. The Kumoha 681 has a light switch. The light unit is a warm white LED type.
- Accessories: destination display stickers, roof equipment, screwdriver for light switch.