Feature: 1. MULTIPURPOSE: This electric rotating sanding pen set includes high performance, low noise tools with accessories for fine DIY work. Ideal for carving, sanding, grinding, polishing, perfect for making resin crafts. 2. MULTI SPEED ADJUSTMENT: The cordless sanding pen features multi speed adjustment, 6000‑20000RPM, which makes it easier to control the speed and meet the power needs of different tasks. This allows for safe and careful sanding in stages. 3. SMALL AND LIGHTWEIGHT: This electric sander is powerful, yet small and lightweight, providing you with nice control and accuracy as well as comfort. 4. CONTINUOUS WORK: The electric grinder can work continuously for up to 200 minutes. You can use it multiple times on a single charge, which is stress free and convenient, allowing you to work continuously. 5. LIGHTING LED: The small cordless sanding pen has an illuminating LED design that reduces backlight shadows, which provides you with a better experience and more precise work. Specification: Item Type: Intelligent Electric Sanding Pen Material: Aluminum Alloy Battery: Lithium battery 3.7V 650mAh (with built in battery). Package List: 1 x Electric Polishing Pen1 x USB Cable8 x Accessories