The Seiko W510-4A20 is a watch model based on the W510 movement.
Parts List
| 0F280BAAS | case back gasket - case back gasket |
| A30A03SMS0A | pusher - button (2h) |
| 71T1ZZ | band - band |
| 71T5ZZ | band - band |
| W5104A2001 | others - case |
| W5104A2002 | others - case |
| W5104A2003 | others - case |
| W5104A2004 | others - case |
| W5104A2005 | others - case |
| S180BS | others - push pin |
Other models with the same movement
| W510-4A00 |
| W510-4A30 |
| W510-4A40 |
| W510-4A50 |