The T1372071109100 typically uses the 23-jewel Powermatic 80.111 movement. While some Powermatic variants have 25 jewels, enthusiasts note that the performance difference is negligible. https://saicreationswatches.com/products/t1372071109100-tissot-unisex-t-classic-prx-powermatic-80-swiss-automatic-unisex-watch