The Seiko 2P20-5280 is a watch model based on the 2P20 movement.
Parts List
| REEN35JN01 | crystal |
| 32N23NA1 | crown |
| 32N27NA5 | crown |
| 32N27NS5 | crown |
| 0G1850B01 | case back gasket |
| WJA10G | band - leather band |
| WJA22G | band - leather band |
| WJA22S | band - leather band |
| WJA34G | band - leather band |
| WJA34S | band - leather band |
| WJJ14G | band - leather band |
| 05Y17CKH | hand - hour hand |
| 05Y17CKM | hand - minute hand |
| 05Y17DBH | hand - hour hand |
| A130AS | others - push pin (for lb) |
| 05Y17DBM | others - minute hand |
| 2P200490XG14 | others - dial |
| 2P200500XB19 | others - dial |
| 2P200500XS19 | others - dial |
| 2P205280 | others - case back |
| 2P20528025 | others - case |
| 2P20528025A | others - case |
| 2P2052802EA | others - case |
| 82800470 | others - case ring |
| 05Y05DGH | others - hour hand |
| DA007BA11 | others - crown and stem gasket |
| 05Y09DGM | others - minute hand |
Caliber 2P20
