The Gruen 515SS is a manual-winding mechanical movement based on the Jeambrun 26D caliber, also produced under the FHF-ST and FHF 969-4 references. It includes a sweep seconds hand and a date complication that advances by changing the time between 21:00 and 24:00 hours. The movement features Shock Protection for enhanced durability. The 515SS was discontinued and saw use primarily during the 1970s in dress watches from the Gruen catalog.
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Display Type
Analog
COMPLICATIONS
Date
FEATURES
Sweep Seconds
