The Seiko W309-4A10 is a watch model based on the W309 movement.
Parts List
| ES0P66LB0B | crystal - crystal |
| ES0P66LB0C | crystal |
| 86578285 | crystal gasket - plastic gasket for crystal |
| 0Z2900B01 | bezel gasket - dichtung |
| EC0060B01 | pusher - pusher gasket |
| 8060542A | pusher - button |
| 8060544C | pusher |
| 005ZQY | band |
| 81350540 | others - button spring |
| W3094A10N2 | others - case |
| A190CS | others - push pin |
| W3090 | others - machine code |
| W3094A10N2A | others - case |
| 81503199 | others - case back screw |
| 81400669 | others - button spring clip |