[USB Quick Charging] It achieves perfect fast charging in 20 minutes, and the smart indicator light provides real-time feedback on battery power. The battery life is about 100 minutes when fully and unloaded. [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. [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- self-adhesive sandpaper. The size and shape are easy to identify. Various shapes of sanding heads and sandpaper of various precisions meet the needs of DIY craft enthusiasts! [Package Includes] ES-A Sander main body x 1, Sanding Heads x 8, Power Cord x 1, Storage Case x 1. Self adhesive sandper for flat sanding head:180/280/400/600/800/1000/1200 x 97pcs, Self adhesive sandper for rounded sanding head: 180/280/400/600/800/1000/1200 x 47pcs., Weight: 0.63272669194 pounds, Manufacturer: Aisuoka