Authentic TAG Heuer Calibre 1 (ETA 6498-1) watch mechanical movement

Calibre 1 is TAG Heuer’s version of the ETA / Unitas 6498-1 hand-wound movement. It beats at 21.600vph and guarantees a power reserve of 46 hours.

It’s a classic Hours, Minutes, Small Seconds movement with ca. 36.6 mm diameter.