The Seiko 5P31-5C50 is a watch model based on the 5P31 movement.
Parts List
| ESAW10JN01 | crystal - crystal |
| 35MA8NS1 | crown |
| 35MA8NA1 | crown |
| 0A2600N01 | case back gasket - case back gasket |
| GK33A | band - band |
| GK34A | band - band |
| 10T08NGM | others - minute hand |
| 10T16NAH | others - hour hand |
| 0351670 | others - winding stem |
| 5P315C507E | others - case |
| 5P315D70XG14 | others - dial |
| 5P315D70XS13 | others - dial |
| 5P319 | others - machine code |
| A170BS | others - push pin |
| 5P315C5075 | others - case |
| 82802380 | others - case ring |
| 5P315C50 | others - case back |
| 10T08NSM | others - minute hand |
| 13SC04A2 | others - second hand |
| 13SC04ES | others - second hand |
| 0Z0060B01 | others - crown and stem gasket |
| 10T16NCH | others - hour hand |