[1] Seven 4+6-car trainsets (70 vehicles) were built between 1996 and 1999 to replace ageing Odakyu 3100 series NSE trains.

[1] Unlike earlier Romancecar trainsets, which used articulated carriages, the 30000 series sets have 20 m (65 ft 7 in) long bogie cars.

[1] Trainsets were introduced on combined Hakone and Enoshima services, with trains dividing at Machida, and later at Sagami-Ono.

[2] The fleet underwent a programme of refurbishment from fiscal 2016, with the first 4+6-car trainset treated returning to service in March 2017, rebranded "EXEα".

[5] Refurbishment was carried out by Nippon Sharyo, with the design overseen by Noriaki Okabe Architecture Network.