Tissot T-Classic Collection 70's Style Swiss Automatic Watch With A Stainless Steel Bracelet Strap, 39.5 x 40mm Tonneau Shaped Case, Blue Coloured Dial & Date Window. 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. Case : see-through caseback Lugs: 12.00 Model: POWERMATIC 80.111 Caliber: 11 1/2''' Dial: HMSD Battery: Power reserve: power reserve up to 80 hours Functions: Patented Nivachron balance spring Strap/Chain reference: T605046447 Buckle: interchangeable quick release bracelet, butterfly clasp with push-buttons Weight: 138g