The Seiko 2B20-5059 is a watch model based on the 2B20 movement.
Parts List
| SAGN17LN01 | crystal - crystal (inorganic) |
| 35NK3NN1 | crown |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| 0F130NA11 | case back gasket |
| B5445G | band - metal band |
| B5445G-BK3G | clasp - clasp |
| T070AS | others - push pin |
| 2B200270XB16 | others - dial |
| 2B200270XG16 | others - dial |
| 2B2027 | others - machine code |
| 2B205059 | others - case back |
| 2B20505925 | others - case |
| 82812810 | others - case ring |
| 04R13DGM | others - minute hand |
| 04R13DGH | others - hour hand |
Caliber 2B20
Other models with the same movement
| 2B20-5000 |
| 2B20-5009 |
| 2B20-5010 |
| 2B20-5019 |
| 2B20-5020 |
| 2B20-5039 |
| 2B20-5049 |