The Seiko 3Y03-0B00 is a watch model based on the 3Y03 movement.
Parts List
| 190W28JN01 | crystal |
| 190W28JN | crystal |
| 30MB6NA1 | crown |
| 0A1800B01 | case back gasket |
| EZ0035B0 | case back gasket |
| B5571G | band |
| B5571G-LKG | band - link |
| B5571K-LKG | band - link |
| B5571W-LKG | band - link |
| B5571K | band |
| B5571W | band |
| B5571W-PB1 | clasp - parts for buckle/clasp |
| B5571K-PB1 | clasp - parts for buckle/clasp |
| B5571W-BK1S | clasp - clasp |
| B5571G-PB1 | clasp - parts for buckle/clasp |
| B5571K-BK1G | clasp - clasp |
| B5571G-BK1G | clasp - clasp |
| 07TA4FGM | others - minute hand |
| 08T08NAH | others - hour hand |
| 08T08NAM | others - minute hand |
| 07SC02NG | others - second hand |
| 82804020 | others - case ring |
| 0801796 | others - date dial |
| 0866575 | others - holding ring for dial |
| 3Y030B00 | others - case back |
| 3Y030B0075 | others - case |
| 3Y030B0075Z | others - case |
| 3Y030B70XG14 | others - dial |
| 3Y030B70XS14 | others - dial |
| 3Y030B78XG14 | others - dial |
| 3Y030B78XS14 | others - dial |
| 3Y030B88XS14 | others - dial |
| 3Y039 | others - machine code |
| 0351546 | others - winding stem |
| T070BS | others - push pin |
| EZ0035B01 | others - crown and stem gasket |
| 08T24AGH | others - hour hand |