The Seiko 7320-520B is a watch model based on the 7320 movement.
Parts List
| RE3N24GN00 | crystal |
| 25N08NS1 | crown - crown |
| 25N08NA1 | crown |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 0G1800N01 | case back gasket |
Caliber 7320
Seiko 7320-520B Watch Guide