The main difference between a mechanical watch and the rest revolves around its Mainspring, which powers the watch. Self-winding (or automatic) watches take care of winding the spring for you. They tend to be a tad heavier and thicker than manual watches to account for the rotor inside that uses the movement of your wrist to wind the spring automatically. Manual-wind watches are generally lighter and thinner, but they ask that you remember to wind it — usually once or twice a day. How to choose? Shopping for a mechanical watch takes time and inspiration. It must feel right for you — something you wear daily and something that will outlive you, on your kid’s wrist, and maybe your grandkids. Here are ten new mechanical watches that could be your daily companion, help you start a watch collection, or, most importantly, spark some joy.