The Seiko 5R66-0AK0 is a watch model based on the 5R66 movement.
Parts List
| 270P34SN01 | crystal - crystal (sapphire) |
| 340P66SB0A | crystal - crystal (sapphire) |
| 2K65A0STW1 | crown - crown (3h) |
| 0F310BAD2 | case back gasket - case back gasket |
| 86574860 | crystal gasket - plastic gasket for crystal |
| 86585400 | crystal gasket - plastic gasket for crystal |
| 86579800 | bezel gasket - plastic gasket for bezel |
| 4LJ3AW | band - leather band |
| 4LJ4AW | band - leather band |
| 4LJ3AWBDB | band - leather without buckle |
| 4LJ4AWBDB | band - leather without buckle |
| AA0WSSA00W | clasp - buckle |
| 1FA100Y0BD1 | hand - hour hand |
| 1FA100Y0BDS | hand - hour hand |
| 2FA140Y0BD1 | hand - minute hand |
| 2FA140Y0BDS | hand - minute hand |
| 3BA145A0CZL | hand - second hand |
| 3EA047A0BDS | hand - small hand (9h) |
| 4CX140F0CZL | hand - 24 hour hand |
| 0351700 | others - setting/winding stem |
| 0866832 | others - holding ring for dial |
| 0878A59 | others - date dial |
| S200BS | others - push pin |
| 5R660AH0X913 | others - dial |
| 5R660AH0XN13 | others - dial |
| 5R660AK0 | others - case back |
| 5R660AK001A | others - case |
| 5R660AK002A | others - case |
| 5R666 | others - machine code |
| 81505009 | others - case back screw |
| 84335744 | others - dial ring |
| 84335745 | others - dial ring |
| 85943009 | others - bezel |
| 86515109 | others - conducting plate |
| DC010BAD2 | others - crown and stem gasket |