I had four costume jewelry watches with dead batteries. When I counted up the money it would take for a shop to replace the batteries, I purchased this kit instead. Four watches with fresh batteries later, I now have a suite of watch repair tools to pass on down to the kids when it's their turn. The tools are well made, so they should last, and though the directions could use a *bit* more illustration, I feel I can take on most watch challenges in the future. If you have a Rolex, you should probably take it to a jeweler. But, for costume jewelry, I doubt this kit can be beat.