[Mini Reciprocating Sander] This USB fast-charging electric sanding pen is equipped with 8 specifications of high-quality nylon sanding heads and 12 types of wear-resistant self-adhesive sandpaper. The size and shape are easy to identify. Various shapes of sanding heads and sandpaper of precisions meet the needs of DIY craft enthusiasts! [Small Sander] The versatile detail sander is and ergonomically designed for small projects and intricate jobs. The portable and compact appearance provides precise control and brisk operation. The reciprocating sander has a three-speed adjustment design, 2800/3100/3600 times per minute, which can complete the work quickly and smoothly. [Overload Protection] Intelligent overload chip protects motor safety at all times. The tool automatically stops when it is overloaded to prevent motor loss and extend service life. [USB Quick Charging] It achieves perfect fast charging in 20 minutes, and the smart indicator light provides real-time feedback on battery