ARROWMAX Electric Engraving Pen, Polishing Pen with 42 Bits, Aluminum Case, Smart Motion Control, OLED, Bluetooth, APP, Wireless Magnetic Charge, for Jewelry, Wood, Glass, Stone, Carving (SGS PRO)

• 【Precision Engraving】The SGS PRO Smart Mini Electric Engraving and Polishing Pen, also known as an engraving pen or carving pen, uses a diamond-tipped engraving head to deliver precise and intricate designs on a range of materials.
• 【Magnetic USB Charge, Long life】Rotary tool cordless comes with 4V rechargeable battery, It can work 90 minutes after a fully charge. For the convenience of our users, the optional large magnetic charger is designed to allow the user to charge the pen in the box, which can reduce the time for the user to put the pen back into the box after charging is complete.
• 【ALL-IN-ONE With 42 Accessories】Rotary tool comes with 42 attachments and accessories is perfect for a variety of light-duty handy works. Grinding, polishing, curving, sanding, engraving and more light projects, all your need is this convenient all-in-one tool. Engraving bits x 30 ,polishing bits x 12.
• 【App Customization(Optional)】Users can precisely customize the speed by every 500 rpm and direction by forward/reverse of every single mode easily via the Arrowmax smartphone app that's available for Android and iOS.
• 【Smart Motion System】 The SGS PRO Smart Mini Electric Engraving and Polishing Pen features a smart motion system that adjusts the speed of the tool based on the angle of the twist, allowing for precise and consistent engraving and polishing results. It can also function as a cordless rotary tool or rotary tool.