For vintage watch lovers and hobbyist watchmakers, the Seiko 63A calibre stands out as a pinnacle of 1970s Japanese engineering. Introduced in the early 1970s, this automatic movement powered iconic models like the Seiko Lord Marvelic and Grand Seiko references, blending robustness with subtle elegance. Its design emphasized durability for everyday wear, making it a favorite for restoration projects today. With a focus on precision and serviceability, the 63A rewards tinkerers who appreciate hands-on disassembly without exotic tools.
Technical Specifications
Movement Type: Automatic with manual winding option and hacking seconds
Jewels: 27
Frequency: 28,800 vph (8 beats per second)
Power Reserve: Approximately 45 hours
Dimensions: 27mm diameter, 5.55mm thickness
Functions: Hours, minutes, central seconds, date at 3 o’clock
Rotor: Bi-directional automatic winding via Seiko’s Magic Lever system
Accuracy: -10 to +30 seconds per day (chronometer-grade variants existed)
Shock Protection: Diashock system on balance
Finish: Geneva stripes on bridges, blued screws, intricate perlage
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
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Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
Mobile/WhatsApp: +91- 9841 360 340