The Tissot PRX T1374072103100 features a 40 mm tonneau-shaped (barrel) stainless steel case with rose‑gold PVD coating, measuring approximately 39.5 mm in width and 10.9 mm in thickness, with a transparent (see‑through) case back. https://saicreationswatches.com/products/t1374072103100-tissot-unisex-t-classic-prx-powermatic-80-watch-for-men