The 6497 was developed by the manufacturer Unitas in the 1950s and is now manufactured and marketed by ETA SA. Originally launched as a caliber for pocket watches, the calibers 6497 is now very popular with wristwatches.
16 ½´´´ Ø 36,60 mm
Movement height 4,50 mm
Running time 46 h
Number of jewels 17
Angle lift of balance 44°
Frequency 18’000 A/h
Hands: Hours, Minutes, Small Seconds
Lépine caliber - small seconds at 9:00.