The Seiko 2P20-0110 is a watch model based on the 2P20 movement.
Parts List
| 180W23HN01 | crystal |
| 180P01HN03 | crystal - crystal |
| 30M49NA1 | crown |
| 0F140BAA1 | case back gasket |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 86573691 | crystal gasket - plastic gasket for crystal |
| 86561350 | bezel gasket - plastic gasket for bezel |
| 82360531 | band - other |
| Z5192C | band - metal band |
| Z5192C-LKG | band - link |
| Z5192C-PB1 | clasp - parts for buckle/clasp |
| Z5192C-BK4S | clasp - clasp |
| 07Y19DCH | hand - hour hand |
| 2P200110PG | others - case |
| 2P200640XS19 | others - dial |
| 82332915 | others - bezel |
| A110AS | others - push pin |
| 82732390 | others - case ring |
| 06Y17DCM | others - minute hand |
| 07Y19DCM | others - minute hand |
Caliber 2P20
