31 jewels28,800 vph (4 Hz)
The Sellita SW261-1-AJ is an automatic caliber with a bidirectional rotor, an analog display, 31 jewels and a frequency of 28,800 vph (4 Hz). Its features include hacking seconds. It is in production.
Last updated 29 Apr 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Jewel Count
31 jewels
Frequency
28,800 vph (4 Hz)
Display Type
Analog
Rotor Type
Ball Bearing
Winding
Automatic (Bidirectional)
FEATURES
Hacking Seconds
QUICK FACTS
FOR WATCH DEALERS
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