The Seiko B337-5050 is a watch model based on the B337 movement.
Parts List
| K00W62GN00 | crystal - crystal |
| 35M82NA1 | crown - crown |
| 35M82NS1 | crown - crown |
| 0A1800B01 | case back gasket |
| 86176990 | crystal gasket - plastic gasket for crystal |
| 86176991 | crystal gasket - plastic gasket for crystal |
| ML13A | band - band |
| ML14A | band - band |
| A110BS | others - push pin (for mb) |
| B33750509999 | others - panel cover |
| B337505B9979 | others - panel cover |
| B3379 | others - machine code |
| B337505075 | others - case |
| B337505061 | others - case |
| 0354850 | others - winding stem |
| 0Z0060B01 | others - crown and stem gasket |
Other models with the same movement