Suwa Seikosha

Now called Seiko Epson Corporation. Currently designs and makes Seiko's quartz and Spring Drive movements.

Calibre 57/560 movement family

Calibre 62 movement family

Calibre 66 movement family

Calibre 61 movement family

Calibre 56 movement family

Calibre 35 movement family

Calibre 38 movement family

Calibre 48 movement family

Some movement designs designed by Suwa Seikosha were also manufactured by Daini Seikosha:

Calibre 5717, 5740C.

603/6201 17 jewels, 6205 17 jewels, 6206B 17 jewel and 26 jewel versions, 6217A, 6220M, 6222

8306 - found in e.g. 8306-9059.

4006 17 jewels

61A, 6105B, 6106C, 6117B, 6119, 6139B, 6146A

5606

6309

35A

38QT

Watch models:

Seiko Super (1950)

Seiko Marvel (1956)

Seiko Lord Marvel (1958.05)

Seiko Crown (Crown, Crown Self Dater, Crown Special, Crown Chronograph, Crown Chronograph Calendar)

Seiko Liner (1960)

Grand Seiko First (1960.12)

Grand Seiko Self Dater (1963)/Calendar

Seiko Quartz-Astron (1969.12.25)