Meet the SGS PRO: a smart app connected polishing and engraving pen that you can use on glass, wood, gold, PLA, stones, steel, and crystals. It has a smart mode to help you choose the best torque, RPM and settings for each job. You can also use the ARROWMAX app for iOS or Android to customize speed and direction.
The pen has an OLED display that shows direction, battery, and current gear. It has a memory function, so you can keep using it without having to worry about losing your past settings. The device runs on a 500mAh battery. You can find out more about it here.