Seiko Movement Reference

This page documents parts that I have sourced and used successfully. This is meant purely as a convenient reference for myself but I published it for anyone else working on their own project which overlaps with my own work here.


7002, 7005, 7006, 7009, 7019, 7S26

Notes:

Frequency: 21600 BPH

Lift Angle: 53°

Parts:

Name Number Info Source Approx Price Reference
Mainspring GR2377X GR Automatic Mainspring 0.95 x .11 x 400 x 10 CousinsUK $16 2017-10 1 2
Balance Complete Seiko 310.020 SEI310020 CousinsUK  $14 2017-10


4205A, 4205B, 4205C, 4206A, 4206B, 4206C

Notes:

Frequency:

Lift Angle:

Parts:

Name Number Info Source Approx Price Reference
Mainspring GR2524X GR Automatic Mainspring 1.05 x .075 x 260 x 6.5 CousinsUK $10 2017-10