If you?re looking for a slim, smooth watch with an authentic ?70s feel, look no further than the PRX Powermatic 80. Created for those with an eye for design and packed with twenty-first century features in a Tissot case shape from 1978, the PRX is a must-have on every watch fan?s wish list. The self-winding Powermatic 80 movement delivers reliability and precision thanks to the innovative Nivachron hairspring. With 80 hours of power reserve, it?s a modern movement designed to keep pace with busy lifestyles. Diameter:40 mm Interchangeable quick release bracelet Automatic movement - up to 80 hours power reserve 316L stainless steel case See-through caseback Scratch-resistant sapphire crystal with antireflective coating