Question: what is the difference between calibre 16 and 1887?
Answer: One thing we know is that more and more TAG Heuer Carrera models will contain TAG Heuer's caliber 1887 movement which is produced in-house. ... This means that the Calibre 16 movement in most older Carrera Chronograph models will become harder to get as the Calibre 16 is more or less the ETA Valjoux 7750.