In 1978, Tissot created a quartz model distinguished by a slim case, narrow hour-markers and a steel bracelet. Its wide horizontal lugs, typical of the time, were perfectly integrated into the flat tonneau-shaped case. A few years later, Tissot registered the name PRX. "PR" stands for "precise" and "robust". Its flexibility and suppleness make it a real success in terms of ergonomic design, and provide exceptional comfort. The satin-finish on the outside is just as meticulous as the polish on the inside. The hands of the Tissot PRX Powermatic 80 steel & 18-carat gold are coated with SuperLumiNova . This brings the dial closer to the watch crystal. The optical effect achieved by Tissot's designers makes the watch case appear even flatter and thinner than it actually is. The Tissot PRX Powermatic 80 steel & 18-carat gold features a scratch-resistant sapphire crystal with anti-reflective coating on both sides. Its Swiss Made automatic movement with a power reserve of up to 80 hours is equipped with a Nivachron balance spring, known for its excellent resistance to magnetic fields.