The Seiko 5Y89-0B40 is a watch model based on the 5Y89 movement.
Parts List
| 240A08JR02 | crystal - crystal |
| 8K40A8SNWA | crown - crown |
| 8K40A8SNWC | crown - crown |
| 0F250NA1S | case back gasket |
| 4623AZ | band - band |
| 4623JZ | band - band |
| 4623AZ-LK2 | band - link |
| 4623JZ-LK2 | band - link |
| 4623JZ-BKG | clasp - buckle |
| 4623JZ-PB2 | clasp - parts for buckle |
| 4623AZ-BKL | clasp - buckle |
| 4623AZ-PB2 | clasp - parts for buckle |
| 2AG105L2BDG | others - minute hand |
| 1AG070L2BDS | others - hour hand |
| 2AG105L2BDS | others - minute hand |
| 3BA030F0BNS | others - small hand (9h) |
| 3BA125F1BNG | others - second hand |
| 3BA125F1BNS | others - second hand |
| 3BA030F0BNG | others - sub hand |
| 0354530 | others - winding stem |
| 81604259 | others - bracelet fixing pin |
| 81190055 | others - bracelet fixing pipe |
| 82727120 | others - case ring |
| 5Y890B4061 | others - case |
| 5Y890B4061Z | others - case |
| 5Y890B40 | others - case back |
| 5Y890B4061Y | others - case |
| 5Y890B00XS14 | others - dial |
| 5Y890B08XG13 | others - dial |
| 5Y890B08XS14 | others - dial |
| 5Y891 | others - machine code |
| 0Z0060B01 | others - crown and stem gasket |
| 1AG070L2BDG | others - hour hand |