The Seiko 5A70-3B20 is a watch model based on the 5A70 movement.
Parts List
| ES9W44SN01 | crystal - crystal |
| 25M18TH1 | crown - crown |
| 0F170NA1S | case back gasket - case back gasket |
| AB23DW | band - band |
| 06V08JPH | others - hour hand |
| 07V16JPM | others - minute hand |
| EZ0035B0D | others - crown and stem gasket |
| 5A703B2093 | others - case |
| 82804380 | others - case ring |
| A120AS | others - push pin |
| 0354881 | others - winding stem |