The Ronda 1243-21 is a manual-winding chronograph movement. It features a 60-second chronograph with 15/30-minute and 12-hour registers, plus a sub-second dial. The pillar wheel mechanism and Breguet hairspring are distinctive technical features. It powered Breitling's Avi and Copilot models in the 1950s and is now discontinued.
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Display Type
Analog
Winding
Manual
COMPLICATIONS
Chronograph30-Minute Counter12-Hour Counter
FEATURES
Small Seconds
More Ronda movements
QUICK FACTS
FOR WATCH DEALERS
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