The Seiko 2P21-505A is a watch model based on the 2P21 movement.
Parts List
| ET0N11JV01 | crystal |
| 30M35NA1 | crown |
| 0G1700B01 | case back gasket |
| B5340G | band - metal band |
| B5340G-BK3G | clasp - clasp |
| 05T01DGM | hand - minute hand |
| 3BA075F1BNG | others - second hand |
| DA007BA11 | others - crown and stem gasket |
| 2P210090XY16 | others - dial |
| 2P21505A25 | others - case |
| 2P219 | others - machine code |
| 82732890 | others - case ring |
| T060BS | others - push pin |
| 05SC05NG | others - second hand |
| 05T01DGH | others - hour hand |
Caliber 2P21
