The Seiko 5Y89-0B50 is a watch model based on the 5Y89 movement.
Parts List
| 270A43SN02 | crystal - crystal (sapphire) |
| 8M45B0SNW2 | crown - crown (3h) |
| 0F260BAD2 | case back gasket - case back gasket |
| D1G8AG | band - band |
| D1G8AG-BK00 | clasp - clasp |
| 3BA025FABNS | others - sub hand |
| 3BA125F1BNS | others - second hand |
| 1AH075A1BNS | others - hour hand |
| 2AH105A1BNS | others - minute hand |
| 82727540 | others - case ring |
| 5Y890B5061 | others - case |
| 5Y890B50 | others - case back |
| 5Y890B5061A | others - case |
| 5Y890B5061B | others - case |
| 5Y890B20XB13 | others - dial |
| 5Y890B20XL13 | others - dial |
| 5Y890B20XS13 | others - dial |
| 5Y891 | others - machine code |
| 84317444 | others - dial ring |
| 84317446 | others - dial ring |
| 84317447 | others - dial ring |
| A180BS | others - push pin |
| 0354530 | others - winding stem |
| D1G8AG-LKPN | others - pin for link |
| AD006BA12 | others - crown gasket |