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Return To ShopThe Seiko 8J80-7020 is a mechanical watch movement that incorporates several key functions. These include an adjustable stud holder, which allows for precision regulation of the movement's rate. The movement also features shock protection, which enhances its durability and resistance to external impacts. Additionally, the Seiko 8J80-7020 includes sweep seconds functionality, enabling a smooth and continuous second-hand motion. Lastly, the movement integrates a calendar feature to display the date.
The Seiko 8J80-7020 features the following functions:
Ronda Reference # | Shock System | Buy |
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Dimensions | GR Reference # | End Type | Buy |
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1.20 x 0.090 x 260 x 8.0 mm | GR2895 | Manual | Buy mainspring |
Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Part Description | Reference # | Alternate | Buy |
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CLICK & SPRING COMBO | 434/137 | 434/STA 69N | Buy part |
MAINSPRING 1.20-.09-10 1/2 | MS-312H | GR 2895 | Buy part |
SCREW, BAL/BAR/PLATE BRIDGE | 5110/158 | 5110/FF 60 | Buy part |
SCREW, CROWN WHEEL | 5420/167 | Buy part | |
SCREW, DIAL SIDE | 5750/679 | Buy part | |
SCREW, RATCHET WHEEL | 5415/631 | Buy part | |
SCREW, STUD | 5738/429 | Buy part | |
STAFF, SHOCK | 723/1280 | *728/AS 530.102 | Buy part |
STEM, TAP 10 | 401/781 | /FF 69N-M6 | Buy part |
WINDING PINION | 410/300 | 410/ESA 100.001 | Buy part |
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