The Seiko 5M45-6A20 is a watch model based on the 5M45 movement.
Parts List
| 290P14SB0A | crystal - crystal |
| 50MA2NG1 | crown - crown |
| FH2980B0A | case back gasket - case back gasket |
| 86565320 | crystal gasket - plastic gasket for crystal |
| EC0060B01 | pusher - pusher gasket |
| 80600548 | pusher - button |
| D0F4DG | band - band |
| 3AX120F0ASG | others - second hand |
| 1AX080L0BTG | others - hour hand |
| 2AB110L0BTG | others - minute hand |
| 4BX115F0BCH | others - sub hand |
| 5M456A20 | others - case back |
| 0866636 | others - holding ring for dial |
| 0878659 | others - date dial |
| 5M452 | others - machine code |
| 5M456A10XG14 | others - dial |
| 84325524 | others - dial ring(set) |
| 89913200 | others - spacer |
| A180BS | others - push pin |
| D0F4DG-EP | others - endpiece |
| 0Z3214B02 | others - rotating bezel gasket |
| 86321864 | others - rotating bezel |
| 5M456A20WF | others - case |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| 0351651 | others - winding stem |
| 0Z0060B01 | others - crown and stem gasket |
| 81400829 | others - button spring clip |
Caliber 5M45
Other models with the same movement
| 5M45-5A00 |
| 5M45-5A0A |
| 5M45-5A10 |
| 5M45-6A00 |
| 5M45-6A01 |
| 5M45-6A10 |
| 5M45-6A30 |
| 5M45-6A40 |
| 5M45-6A50 |
| 5M45-6A60 |
| 5M45-6A70 |
| 5M45-6A80 |
| 5M45-6A90 |