The 40mm diameter, stainless steel Tissot PRX Powermatic 80 offers an automatic Swiss movement, energy reserve of up to 80 hours, and scratch-resistant sapphire crystal with antireflective coating. With water resistance up to 10 bar (100 m / 330 ft) and a 2-year warranty, this stylish timepiece features a black chameleon dial and stainless steel bracelet.