The Seiko 5M63-0C20 is a watch model based on the 5M63 movement.
Parts List
| 280P03HN03 | crystal - crystal |
| 8K50E8SJW1 | crown - crown |
| FE298BAD2 | case back gasket - case back gasket |
| 86177922 | crystal gasket - plastic gasket for crystal |
| 86564440 | bezel gasket - plastic gasket for bezel |
| A35A58SMS0A | pusher - button (2h) |
| 4544JG | band - band |
| 4544JG-LK3 | band - link |
| 4544JG-PB1 | clasp - parts for buckle |
| 4544JG-BKF | clasp - buckle |
| 3AX120F0ASF | others - second hand |
| 2AH110F0BSW | others - minute hand |
| 1AH075F0BSW | others - hour hand |
| 83200273 | others - button spring clip |
| 81351630 | others - button spring |
| AD006BAD1 | others - crown and stem gasket |
| 0351653 | others - winding stem |
| 5M630C2001D | others - case |
| 5M630C20 | others - case back |
| 0866780 | others - holding ring for dial |
| 0878672 | others - date dial |
| 5M630C58XB19 | others - dial |
| 5M632 | others - machine code |
| 84327704 | others - dial ring |
| S190BS | others - push pin |
| 82294009 | others - bezel |
Caliber 5M63
