The Seiko 5P31-6A50 is a watch model based on the 5P31 movement.
Parts List
| 275W04SN01 | crystal |
| 40M78NA1 | crown - crown |
| 0A2500N0A | case back gasket - case back gasket |
| 86564621 | crystal gasket |
| AB40A | band - metal band |
| AB43A | band - metal band |
| AB41A | band - metal band |
| AB42A | band - metal band |
| 11T32AGM | others - minute hand |
| 11TA6FGH | others - hour hand |
| 11T12AGH | others - hour hand |
| A100BS | others - push pin (for mb) |
| 5P316A5075 | others - case |
| 5P316A5099 | others - case |
| 5P316B10XG19 | others - dial |
| 5P316B10XS19 | others - dial |
| 5P316B20XS19 | others - dial |
| 5P316B20XS29 | others - dial |
| 5P316B70XS18 | others - dial |
| 5P316D50XS14 | others - dial |
| 5P319 | others - machine code |
| 5P316A50P7 | others - case |
| 82803220 | others - case ring |
| 5P316A50 | others - case back |
| 0351670 | others - winding stem |
| 13SC04A2 | others - second hand |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 11TA8AGH | others - hour hand |
| 11T32FSM | others - minute hand |
| 11TA8AGM | others - minute hand |
| 11TA6FSH | others - hour hand |