A fundamental product detail to know is that Tag Heuer engraves important identification numbers onto the case back of every watch that they sell. The watch serial number and the model number can be readily seen on each and every one.

Since 2022, TAG Heuer has decided for a better consistency to rename their Connected Watches by Calibre E. You will find below the list of connected watches with with their old product names and those given today. To find the model and serial number of your connected watch, please look at the back of your watch.

Like a car, a Tag Heuer watch will usually depreciate about 10% per year for approximately 3 years, when it starts to plateau. Watches that increase in value are those that are desired by collectors. This is usually limited to special editions and vintage models that are more difficult to find.

One such early effort, and more affordable chronograph, is the Grand Carrera Caliber 36 RS Caliper Chronograph that can measure time to 1/10th of a second accuracy.