The Seiko 1400-5420 is a watch model based on the 1400 movement.
Parts List
| ES3N55KN00 | crystal |
| 35N57NS1 | crown |
| 35N57NA1 | crown - chrom |
| 0H1600B01 | case back gasket - case back gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 1400
Seiko 1400-5420 Watch Guide