The Seiko 5420-5079 is a watch model based on the 5420 movement.
Parts List
| SA5N90AN00 | crystal - crystal (organic) |
| 35N18NA1 | crown |
| 35N18NS1 | crown |
| 0A1400N01 | case back gasket |
| 0G0055B01 | case back gasket - crown and stem gasket |
| Z665G | band - metal band |
| Z665G-LKG | band - link |
| Z665S-LKS | band - link |
| Z665S | band - metal band |
| Z665Y | band - metal band |
| Z665G-BK4G | clasp - buckle |
| Z665S-PB1 | clasp - parts for buckle/clasp |
| Z665G-PB1 | clasp - parts for buckle/clasp |
| Z665S-BK4S | clasp - buckle |
| 05R17DSH | hand - hour hand |
| 05R01DSM | others - minute hand |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 0354706 | others - winding stem |
| 54200120XG14 | others - dial |
| 54200120XS13 | others - dial |
| 5420507925 | others - case |
| 542050792E | others - case |
| 54209 | others - machine code |
| 82702120 | others - case ring |
| Z665S-ES | others - eyelet screw |
| Z665G-ES | others - eyelet screw |
| 05R01DGM | others - minute hand |
| 05R17DGH | others - hour hand |
Caliber 5420
