The Seiko Y580-5550 is a watch model based on the Y580 movement.
Parts List
| RE5N94LM01 | crystal |
| 30E02NF1 | crown |
| 844LA | band - leather band |
| A120AS | others - push pin |
| Y5800 | others - machine code |
| Y5801040X984 | others - dial |
| Y5805550BF | others - case |
| 0354902 | others - setting/winding stem |
| 82718600 | others - case ring |
| 05R26NGH | others - hour hand |
| 05R26NGM | others - minute hand |