Eterna 3501
Manual Winding18 jewels48h power reserve28,800 vph (4 Hz)
Rectangular Eterna hand-wound calibre for the Madison Three Hands. Its footprint is 24 x 30 mm, not a round diameter. The official EMC 3501 manual gives approximately 48 hours of reserve and stop seconds, with a lock against overwinding. Unlike the 3505, it does not have the Spherodrive barrel support. The 18-jewel count describes the documented photographed version; older marketing counts differ.
Last updated 2 Oct 2026Suggest a correction
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Jewel Count
18 jewels
Power Reserve
48h
Frequency
28,800 vph (4 Hz)
Height
4.1mm
Display Type
Analog
Winding
Manual
Shock Protection
KIF
FEATURES
Hand WindingSweep SecondsHacking Seconds
QUICK FACTS
FOR WATCH DEALERS
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