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 .Men's Tissot PRX Powermatic 80. 40mm Stainless steel case. Stainless steel bracelet. Green dial with date display. Scratch resistant sapphire crystal. Swiss Automatic movement. Power reserve up to 80 hours.