The Seiko Y189-7A20 is a watch model based on the Y189 movement.
Parts List
| 320W46GN00 | crystal - crystal |
| 45M76NS1 | crown - crown |
| 0351580 | crown - winding stem |
| 45M76NA1 | crown - crown (3h) |
| 0F280NA1S | case back gasket - case back gasket |
| 0Z3524B02 | case back gasket - rotating bezel gasket |
| 86566881 | crystal gasket - plastic gasket for crystal |
| 80618947 | pusher - button |
| 80618949 | pusher - button |
| EC0060B01 | pusher - pusher gasket |
| EB12AB | band - band |
| EB14AB | band - band |
| EB13AB | band - band |
| 2AB115AFBSA | others - minute hand |
| 1AB080AEBSA | others - hour hand |
| 1CA035A0BNB | others - small hand (9h) |
| 3BA035FMBNB | others - sub hand |
| 1AB080AEBSS | others - hour hand |
| 2AB115AFBSS | others - minute hand |
| 1AB080AEBSG | others - hour hand |
| 2AB115AFBSG | others - minute hand |
| 3AX120FMAFC | others - second hand |
| 3BA035FMBNG | others - sub hand |
| 3BA035FMBAH | others - sub hand |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| Y1897A2061 | others - case |
| 86327769 | others - rotating bezel |
| 86327765 | others - rotating bezel |
| 0866602 | others - holding ring for dial |
| 84315283 | others - dial ring |
| 84315284 | others - dial ring |
| 84315285 | others - dial ring |
| A180BS | others - push pin |
| Y1896 | others - machine code |
| Y1897A30XB14 | others - dial |
| Y1897A30XL14 | others - dial |
| Y1897A30XS14 | others - dial |
| Y1897A206Y | others - case |
| 86327764 | others - rotating bezel |
| Y1897A206YA | others - case |
| 0Z0060B01 | others - crown and stem gasket |
| 3AX120FMAFF | others - second hand |
| 3AX120FMAFH | others - second hand |
| 1CA035A0BNG | others - (24 hour hand) |
| 1CA035A0BAS | others - (24 hour hand) |
Other models with the same movement