Felsa 702 Watch Spare Parts: Detailed Guide for Collectors and Watchmakers
The Felsa 702 is a Swiss automatic watch movement known for its compact size and reliable performance. Belonging to the Bidynator line, this calibre was widely used in the 1950s and features a diameter of 9.5 lignes (approximately 21 mm). It operates at 18,000 vibrations per hour (vph) and includes between 17 to 25 synthetic jewels. The movement offers a power reserve of about 38 hours, making it a durable and precise choice for wristwatches requiring a compact automatic calibre.
Key Technical Specifications
Calibre: Felsa 702 (Bidynator series)
Movement Type: Automatic, mechanical
Jewels: 17 to 25 synthetic rubies
Frequency: 18,000 vph
Diameter: 21 mm (9.5 lignes)
Power Reserve: Approximately 38 hours
Functions: Hours, minutes, sweep seconds, date
Common Spare Parts
Balance Staff: Essential for balance wheel oscillation and time regulation
Mainspring: New Old Stock (NOS) mainsprings recommended for consistent power delivery
Rotor & Bearings: Components critical for efficient bidirectional winding
Stem & Crown: Fits precisely for winding, time setting, and date adjustment
Gear Train Components: Center wheel, third, fourth, and escape wheels ensure smooth gear train operation
Hands & Dial Components: Compatible hour, minute, and sweep second hands, plus date-related parts
Jewels: Synthetic rubies that minimize friction and wear on bearings and pivots
Clicks & Springs: Secure winding mechanism components such as ratchet wheels and click springs
Bridges & Plates: Structural elements supporting and aligning the movement parts
Maintenance and Sourcing Tips
Verify the “702” calibre marking before ordering parts to ensure compatibility
Use NOS or authenticated donor parts to preserve watch originality and value
Source from trustworthy vintage watch parts dealers and specialized online marketplaces
Employ Swiss-certified lubricants and professional servicing for increased durability
Importance of Genuine Spare Parts
Ensures accuracy, durability, and watch authenticity preservation
Maintains collector value and operational integrity
Facilitates expert repairs and reliable daily use
Authentic spare parts are vital to uphold the Felsa 702’s reputation as a compact, precise Swiss automatic movement appreciated by collectors and watchmakers alike.
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