If you perform precise tasks, a rotating cordless multi-tool is the best choice. Thanks to the battery, you can work anywhere. Even when there's no socket. That way, you can easily find a spot with enough space and the best light. There are also no cables in the way, so you're less likely to slip or make a mistake. That's useful when you're engraving letters or polishing jewelry. After use,you can easily charge the rotating multi-tool with the included charger.