The Seiko 3Y02-0A20 is a watch model based on the 3Y02 movement.
Parts List
| 180W38LN01 | crystal |
| 180W38LN | crystal |
| 30MB6NS1 | crown |
| 30MB6NA1 | crown |
| 0H1720N0 | case back gasket |
| 0A1800N01 | case back gasket |
| 86570961 | crystal gasket - plastic gasket for crystal |
| G5110H | band |
| G5110C | band - metal band |
| G5110C-LKG | band - link |
| G5110G-LKG | band - link |
| G5110H-LKG | band - link |
| G5110J | band - metal band |
| G5110K | band - metal band |
| G5110K-LKG | band - link |
| G5110L | band - metal band |
| G5110L-LKG | band - link |
| G5110S-LKS | band - link |
| G5110Y | band - metal band |
| G5110Y-LKG | band - link |
| G5110S | band |
| G5110G | band |
| G5110Y-BK1G | clasp - clasp |
| G5110S-PB1 | clasp - parts for buckle/clasp |
| G5110S-BK1S | clasp - clasp |
| G5110L-BK1S | clasp - clasp |
| G5110K-BK1G | clasp - clasp |
| G5110H-PB1 | clasp - parts for buckle/clasp |
| G5110G-PB1 | clasp - parts for buckle/clasp |
| G5110H-BK1G | clasp - clasp |
| G5110C-PB1 | clasp - parts for buckle/clasp |
| G5110G-BK1G | clasp - clasp |
| G5110C-BK1S | clasp - clasp |
| 2BC075A0BAA | others - minute hand |
| 07SC02NG | others - second hand |
| 07SC02NS | others - second hand |
| 0351546 | others - winding stem |
| 81180229 | others - bracelet fixing pipe |
| 81604259 | others - bracelet fixing pin |
| 81604219 | others - bracelet fixing pin |
| 82804020 | others - case ring |
| 0801754 | others - date dial |
| 0801807 | others - date dial |
| 3Y020A20 | others - case back |
| 3Y020A2061 | others - case |
| 3Y020A2075 | others - case |
| 3Y020A2098 | others - case |
| 3Y020A20XF | others - case |
| 3Y020A40XG14 | others - dial |
| 3Y020A40XS13 | others - dial |
| 3Y020A48XG14 | others - dial |
| 3Y020A48XS13 | others - dial |
| 3Y020A50XS14 | others - dial |
| 3Y020A50XS24 | others - dial |
| 3Y020A58XS14 | others - dial |
| 3Y020A58XS24 | others - dial |
| 3Y020A78XS14 | others - dial |
| 3Y029 | others - machine code |
| 07TC2FGH | others - hour hand |
| EZ0035B01 | others - crown and stem gasket |
| 07TC2FGM | others - minute hand |
| 07T02ASM | others - minute hand |
| 07T02AGM | others - minute hand |
| 07T02ASH | others - hour hand |
| 07T02AGH | others - hour hand |