7 jewels
Caliber 50 is a manual-winding Swiss mechanical alarm clock movement manufactured by ETA SA. The 7-jewel movement is marked "Cal. 50" with "Seven 7 Jewels, Unadjusted" and was used in brass travel-size alarm clocks. Looping SA produced the caliber in Corcelles, Switzerland.
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Jewel Count
7 jewels
Display Type
Analog
FEATURES
Hand Winding
