The Seiko 5420-5089 is a watch model based on the 5420 movement.
Parts List
| ES4N76GN00 | crystal - crystal |
| 35M94NA1 | crown |
| 0A1800N01 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
| GGA03G | band - leather band |
| GLL26 | band - leather band |
| KLL48 | band - leather band |
| A110BS | others - push pin (for mb) |
| 54200170XN14 | others - dial |
| 5420508925 | others - case |
| 54209 | others - machine code |
| 82702040 | others - case ring |
| 06R13DGH | others - hour hand |
| 0354705 | others - winding stem |
| 07R03DGM | others - minute hand |
Caliber 5420
