The Seiko 3Y03-0A70 is a watch model based on the 3Y03 movement.
Parts List
| 200W28HM01 | crystal |
| 200W28HM | crystal |
| 45EB2NA1 | crown |
| FH2081B0A | case back gasket - case back gasket |
| FH2081B0 | case back gasket |
| 86581380 | crystal gasket |
| 86581381 | crystal gasket - plastic gasket for crystal |
| 86179080 | bezel gasket - plastic gasket for bezel |
| G5123S-LKS | band - link |
| G5123S | band |
| G5123S-PB1 | clasp - parts for buckle/clasp |
| G5123S-BK1S | clasp - clasp |
| 0351546 | others - winding stem |
| 0801752 | others - date dial |
| 0866553 | others - holding ring for dial |
| 3Y030A70 | others - case back |
| 3Y030A7061 | others - case |
| 3Y030B1LXN14 | others - dial |
| 3Y037 | others - machine code |
| 82350689 | others - bezel |
| 82801600 | others - case ring |
| A130BS | others - push pin |
| 0A0150B0A | others - crown and stem gasket |
| 08SC51YG | others - second hand |
| 08TF6BGM | others - minute hand |
| 89995390 | others - pusher spacer |
| 08TF6BGH | others - hour hand |