The bottom number is your timepiece's unique serial number, while the top is the model reference, which is identical for each watch of the model type. What do the serial and model numbers mean? The two numbers on the back of your TAG Heuer watch have different purposes.

The best way to ensure the watch you buy is authentic is by purchasing it from an official Tag Heuer registered retailer, such as Wallace Allan. Every purchase comes with an authentic box and original authenticity documents, as well as a manufacturers warranty, so you can be sure that the watch you receive is genuine.

TAG Heuer is not in any way related to Rolex other than the fact that they're both swiss watchmakers. Is There Any Better Watchmaker Than Rolex? It's hard to say as opinions vary, depending on watch type and price points. But some of the few luxury watchmakers touted to make better watches than Rolex are A.

The new 36mm white gold TAG Heuer Carrera Date Plasma Diamant d'Avant-Garde watch is set with 4.8 carats of lab-grown diamonds including 1.4 carats of yellow Diamant d'Avant-Garde diamonds. Creating colored lab-grown diamonds is no easy feat, but that doesn't stop this brand.