The Seiko 4216-5120 is a watch model based on the 4216 movement.
Parts List
| RE0W69LN00 | crystal |
| 40ML3NS1 | crown |
| 40ML3NN1 | crown |
| FE278BA11 | case back gasket - case back gasket |
| DB0055B01 | case back gasket - crown and stem gasket |
Caliber 4216
Seiko 4216-5120 Watch Guide