The Seiko W620-4320 is a watch model based on the W620 movement.
Parts List
| K00P05L20C | crystal - crystal (inorganic) |
| 0F270BAA1 | case back gasket - case back gasket |
| F0P7AZ | band - band |
| 82836970 | others - case ring |
| W620432079A | others - case |
| W6204320 | others - case back |
| A150BS | others - push pin |