Tools: Large screwdriver Tweezers (optional) Battery: 1130, 389, SR54 Difficulty rating: Simple (2-5 mins) So let’s get right into it. Save yourself a little money and replace your Swatch watch battery at home for about $3. In my experience, Swatch battery replacements are the easiest of all to replace. Just have fun with it. Buy a Swatch watch battery here. All you need is a standard screwdriver large enough to place adequate pressure on the battery retention cap. First, place the watch face down on a surface that will not scratch its plastic crystal. Next, push your screwdriver into the...