The Seiko 2F70-0640 is a watch model based on the 2F70 movement.
Parts List
| 270A17SN01 | crystal - crystal |
| 25M15NS1 | crown |
| 25M13NS5 | crown - crown |
| 0H2600B01 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| 0F220NAA3 | bezel gasket |
| A005CB | band - band |
| A044DB | band - band |
| 10M31JGH | others - hour hand |
| 10M31JGM | others - minute hand |
| 81182699 | others - bracelet fixing pipe |
| 82863510 | others - case ring |
| 81613919 | others - bracelet fixing pin |
| 2F700640 | others - case back |
| 0351360 | others - winding stem |