Katerk Cordless Rotary Tool Kit, 3.7V Mini Rotary Tool with 5 Speed and 70PCS Accessories, 20000RPM, USB Charging Multi-Purpose Power Tool for Engraving, Sanding, Drilling, Polishing, Cutting, Grey

5-Speed Control & Memory Function: Katerk’s cordless rotary tool features variable speeds from 5,000 to 20,000 RPM for precision tasks. The smart memory preserves your setting when restarted within 5 minutes, then auto-resets to Speed 3 for next use—no repetitive adjustments needed. Work smarter with effortless control!Extended Runtime & Smart Power Display: This 3.7V power rotary tool packs a 2500mAh high-capacity battery (25% longer runtime than others) with an innovative 4-LED power bar that displays real-time battery levels. Stay informed and work uninterrupted (Type-C charging—recharge when 1 light remains).Compact and portable: This mini rotary tool is ultra-lightweight at just 0.33…