The Seiko 3Y02-0B50 is a watch model based on the 3Y02 movement.
Parts List
| 180W38JN01 | crystal - crystal |
| 180W38JN | crystal |
| 30MB6NA1 | crown |
| 0A1800B01 | case back gasket |
| EZ0035B0 | case back gasket |
| 86570961 | crystal gasket - plastic gasket for crystal |
| 86178220 | bezel gasket - plastic gasket for bezel |
| B5650L | band |
| B5650J | band |
| B5650J-LKS | band - link |
| B5650K-LKG | band - link |
| B5650L-LKG | band - link |
| B5650K | band |
| B5650J-PB1 | clasp - parts for buckle/clasp |
| B5650K-BK1G | clasp - clasp |
| B5650J-BK1S | clasp - clasp |
| B5650L-PB1 | clasp - parts for buckle/clasp |
| B5650K-PB1 | clasp - parts for buckle/clasp |
| B5650L-BK1S | clasp - clasp |
| 2BC075A0BAA | others - minute hand |
| 07SC02NG | others - second hand |
| 1BB050S0BDG | others - hour hand |
| 0351546 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 82804060 | others - case ring |
| 82354161 | others - bezel |
| 0801754 | others - date dial |
| 0801807 | others - date dial |
| 3Y020B50 | others - case back |
| 3Y020B5061Z | others - case |
| 3Y020B5075Z | others - case |
| 3Y020B5098Z | others - case |
| 3Y020C78XS14 | others - dial |
| 3Y020C88XS14 | others - dial |
| 3Y020C98XG14 | others - dial |
| 3Y020C98XS14 | others - dial |
| 3Y029 | others - machine code |
| 82354169 | others - bezel |
| 2BB075S0BDG | others - minute hand |
| EZ0035B01 | others - crown and stem gasket |
| 07TC2FGH | others - hour hand |
| 07TC2FGM | others - minute hand |
| 07TB8AGH | others - hour hand |
| 07TB8AGM | others - minute hand |
| 07TE0DGM | others - minute hand |
| 07TE0DGH | others - hour hand |