Interestingly enough, the Powermatic 80 does not come equipped with a regulator.
It also has 23 jewels, which allows for less friction on the surface while rotating.
Quartz Powermatic 40 shown above and below.
It possesses a faster beat frequency of 28,800 vibrations per hour 4Hz and a 38-hour power supply.
If you find this Grande Tapisserie design familiar, that is probably because it is akin to the dials seen on various steel sports watches from.
Within it, Tissot has laid down dials with sophisticated textures, like sun-brushing or vertical-brushing.