The , branded , is a limited express EMU

Electric multiple unit

An electric multiple unit or EMU is a multiple unit train consisting of self-propelled carriages, using electricity as the motive power. An EMU requires no separate locomotive, as electric traction motors are incorporated within one or a number of the carriages...

 type operated by Tōbu Railway

Tobu Railway

is a Japanese commuter railway company in the Greater Tokyo Area as well as an intercity and regional operator in the Kantō region. It operates in Tokyo, Saitama, Chiba, Tochigi, and Gunma Prefectures...

 in Japan since 1990. The trains are used on Kegon and Kinu services to Nikkō and Kinugawa-Onsen.

History

The 100 series trains entered service on 1 June 1990 on Kegon and Kinu services from Asakusa

Asakusa Station

is a railway station in the Asakusa district of Taito, Tokyo, Japan.-Lines:* Tobu Isesaki Line* Toei Asakusa Line '* Tokyo Metro Ginza Line 'The Tsukuba Express Asakusa Station is located about 600 m to the west.-Tobu Railway:...

 in Tokyo to Nikkō

Tobu Nikko Station

is a railway station located in Nikkō, Tochigi Prefecture, Japan.The station is the terminal of the Tōbu Nikkō Line.-External links:*...

 and Kinugawa-Onsen

Kinugawa-Onsen Station

is a train station in Nikkō, Tochigi Prefecture, Japan.- Adjacent stations :...

, replacing the ageing 1720 series trains operating since 1960. Two sets were delivered in fiscal 1989, two more were delivered in fiscal 1990, and five were delivered in fiscal 1991, bringing the fleet to nine sets.

All cars were made no-smoking from 18 March 1995.

Through-running Spacia Nikkō

Nikkō (train)

The is a limited express train service in Japan operated jointly by the East Japan Railway Company and Tobu Railway between in Tokyo and in Tochigi Prefecture.-Semi-express Nikkō:...

and Spacia Kinugawa

Kinugawa (train)

The and are limited express train services in Japan operated jointly by the East Japan Railway Company and Tobu Railway between in Tokyo and in Tochigi Prefecture.-History:...

services from Shinjuku

Shinjuku Station

is a train station located in Shinjuku and Shibuya wards in Tokyo, Japan.Serving as the main connecting hub for rail traffic between central Tokyo and its western suburbs on inter-city rail, commuter rail and metro lines, the station was used by an average of 3.64 million people per day in 2007,...

 in Tokyo to Tōbu Nikkō and Kinugawa-Onsen via the JR Tōhoku Main Line commenced on 18 March 2006, and three sets (106 to 108) were modified with JR ATS-P for use on JR East lines.

Formation

Car No.	1	2	3	4	5	6
Designation	Mc2	M4	M3	M2	M1	Mc1
Numbering	100-6	100-5	100-4	100-3	100-2	100-1

Source:

Interior

Seat pitch is 1,100 mm. Car 6 contains six 4-seat compartments. These are marked as "Green cars" on JR lines.