| Hitachi, Kawasaki Heavy Industries, Kinki Sharyo, Niigata Tekkō|
Hakutaka White Wing (JR-West)
Snow Rabbit Express (Hokuetsu Express)
The 681 series (681系, Roppyaku-hachijūichi-kei) is a dual-voltage electric multiple unit (EMU) train type operated by West Japan Railway Company (JR-West) and Hokuetsu Express on limited express services in Japan.
681 series Wikipedia
Four 6-car sets (T01–T03, T06) and five 3-car sets (T11–T13, T15, T17) are used on Thunderbird services. These trains feature "Thunderbird" branding. Also four 6-car sets (W01–W04) and four 3-car sets (W11–W14) are used on Hakutaka services. These trains feature "White Wing" logos.
From February 2015, Hakutaka W sets began being repainted into the same livery as 683 series trainsets used on Shirasagi services, with thin blue and orange lines below the window band.
The pre-series 6-car set (T18) and one 3-car set (T07) are used on Thunderbird services.
Two 6-car sets (N01–N02) and two 3-car sets (N11–N12) are used on Hokuetsu Express Hakutaka services. These trains feature "Snow Rabbit Express" logos.
All of the 681 series trainsets used on Thunderbird limited express services are scheduled to undergo a programme of refurbishment from autumn 2015 until the end of fiscal 2018.