17 jewels28,800 vph (8 Hz)
Caliber 277.001 is a manual-winding lever movement (anchor escapement) manufactured by ETA SA in Switzerland. It measures 15.15mm in length, 13.0mm in width, and 3.6mm in height, operates at 4 Hz (28,800 vibrations per hour), and contains 17 jewels. The movement notably lacks a seconds hand and was introduced in 1981.
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Jewel Count
17 jewels
Frequency
28,800 vph (8 Hz)
Height
3.6mm
Display Type
Analog
QUICK FACTS
BRAND
TYPE
Manual WindingSTATUS
In ProductionLAUNCH YEAR
1981COUNTRY
SwitzerlandALSO KNOWN AS
277.001