The TCL Movetime Family Watch MT40X is an older model with simpler features and probably a slightly longer battery life, as it uses less power-intensive functions. The newer models such as the MT42X or MT46X, on the other hand, have more features, such as 4G connectivity, GPS and a more modern app, but this can shorten the battery life with intensive use. While the MT40X is lighter and offers slightly fewer features, the newer versions usually have the same display size but are slightly heavier and more feature-rich thanks to additional hardware. They are therefore not identical, but differ primarily in terms of connectivity and smart features as well as battery behaviour.