Smartwatches have a two-fold problem. First is how they sometimes feel like a solution in search of a problem. The more pressing problem, however, is the short, often less than 24-hour, battery life. Smartwatch makers Mobvoi can’t really answer the first but is offering a solution for the second. With the new TicWatch Pro that’s launching today, you can get two, even three, days of use. The secret, if you haven’t heard yet, is that it has two screens instead of one.