The Seiko 1320-5620 is a watch model based on the 1320 movement.
Parts List
| ES9N11AN00 | crystal |
| 35N57NS1 | crown |
| 35N57NA1 | crown - chrom |
| 0H1650B01 | case back gasket - case back gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 1320
Seiko 1320-5620 Watch Guide