The Seiko 3Y03-0A80 is a watch model based on the 3Y03 movement.
Parts List
| 200W14HN01 | crystal |
| 200W14HN | crystal |
| 35MF6NA1 | crown |
| FH2081B0A | case back gasket - case back gasket |
| EA0040B0 | case back gasket |
| 86179091 | crystal gasket |
| 86179080 | bezel gasket - plastic gasket for bezel |
| S5003C-LKG | band - link |
| S5003C | band |
| S5003G | band - metal band |
| S5003G-LKG | band - link |
| S5003G-PB1 | clasp - parts for buckle/clasp |
| S5003G-BK2G | clasp - clasp |
| S5003C-BK2S | clasp - clasp |
| S5003C-PB1 | clasp - parts for buckle/clasp |
| 08SC14NG | others - second hand |
| 0351546 | others - winding stem |
| 0801752 | others - date dial |
| 0866553 | others - holding ring for dial |
| 3Y030A80 | others - case back |
| 3Y030A8075 | others - case |
| 3Y030A8098 | others - case |
| 3Y030B50XS14 | others - dial |
| 3Y030B60XG14 | others - dial |
| 3Y037 | others - machine code |
| 82351741 | others - bezel |
| 82801600 | others - case ring |
| B080BS | others - push pin |
| EA0040B0A | others - crown and stem gasket |
| 08T24AGH | others - hour hand |
| 08TH2NGM | others - minute hand |
| 08TH2NGH | others - hour hand |
| 08T24AGM | others - minute hand |