Eterna caliber 3510

Mounted on ball bearings in Eterna Movement Spherodrive fashion, the 3510 movement’s two series-coupled barrels provide eight full days of exceptionally smooth and regular operation. Calibre 3510 is a hand-wound, shaped movement. Dimensions: 32 x 26 mm Height: 6.6 mm Vibrations per hour: 28’800 v.p.h Power reserve: 192 h No. of jewels: 22 No. of ball bearings: 7