Tissot Watch Le Locle Powermatic 81 T0064071104300. The name Le Locle seems to be a reliable ingredient of success. As well as being the name of Tissots home and heritage, nestled in the Swiss Jura Mountains, it is the name of a hugely popular automatic watch family. The models display exquisite elegance with details such as Roman numerals and a traditional Le Locle signature which complete the picture of classical chic. These finish off soave daytime and evening looks with a flourish.