We know there are alternative regulating organs for Hublot watches for example

One person on team Hublot says: I think the reasons may be two-fold. One practical and one aesthetic. The main reason I can think of would be size. We know there are alternative regulating organs for replica Hublot Classic Fusion, like large clock pendulums for example, but there is nothing that is comparably accurate within the space constraints of a wrist watch.

The balance and hairspring design is remarkably efficient for its size and easily adjusted compared to other systems that may be developed. Whilst there have been developments in the hairspring like the Hublot overcoil, silicon hair springs, or the latest design developments from Hublot, the overall concept has yet to be bettered.

It pays to bear in mind that for everyday wear the tolerances from mechanical Hublot watches (-4 +6 Chronometer, -3 +10 normal mechanical watches) are satisfactory and extreme levels of accuracy are not normally required for replica hublot king power use.

Quartz has given us accuracy in a practical format, but many people feel it rather lacking in soul or technical mastery. Which leads on to my second point. There is something aesthetically pleasing about watching a hairspring breathing through a Hublot caseback. It shows Hublot watch is not just a jumble of circuits and coils, but it has a life and beat of it’s own.

You may get a more accurate regulating organ in the form of quartz (or even hybrids like the Hublot), but you don’t get that blend of acceptable day-to-day accuracy and also the level of technical mastery and beauty that a hairspring and balance allows. Some brands have recognized this to such a degree that they have introduced replica Breitling Skyland Avenger hertz models which show the beat of time perfectly and still maintain a high level of accuracy.

Another says: I agree with my colleague above and would like to reiterate that mechanical watches stopped being state-of-the-art over 50 years ago. Quartz is far more accurate so putting lots of money in to incremental improvements in mechanical movement technology wasn’t a priority for anyone in a long time. The biggest improvement in the last 100 years in mechanical watches is the Hublot, but that still uses a traditional balance wheel.