The Seiko 5Y89-0B20 is a watch model based on the 5Y89 movement.
Parts List
| 250A03SN02 | crystal - crystal (sapphire) |
| 8K40B2SNW1 | crown - crown |
| 0F250BA1S | case back gasket - case back gasket |
| D0Z6AB | band - band |
| DC85AB | band - band |
| D0Z6AB-LK | band - link |
| D0Z6AB-LK00 | band - link |
| DC85AB-LK2 | band - link |
| DC85AB-PB2 | clasp - parts for buckle/clasp |
| D0Z6AB-BK00 | clasp - clasp |
| DC85AB-BKX | clasp - clasp |
| D0Z6AB-BKX | clasp - buckle |
| D0Z6AB-PB2 | clasp - parts for buckle |
| 3BC030FMBNS | others - sub hand |
| 3BA125F1BNS | others - second hand |
| 1AH070L0BDS | others - hour hand |
| 2AH105L2BDS | others - minute hand |
| 0354530 | others - winding stem |
| 82727120 | others - case ring |
| 5Y890B2061 | others - case |
| 5Y890B20 | others - case back |
| 81190055 | others - bracelet fixing pipe |
| 81601449 | others - bracelet fixing pin |
| DC85AB-EP3 | others - endpiece |
| D0Z6AB-LK01 | others - half adjust link |
| 5Y890A90XB23 | others - dial |
| 5Y890A90XS23 | others - dial |
| 5Y891 | others - machine code |
| 0Z0060B01 | others - crown and stem gasket |