1. Powered by a 7.4V high-performance motor reaching up to 40,000 RPM. Paired with a 40-speed stepless rotary knob, it allows precise speed fine-tuning for cuticle removal, natural nail shaping, gel polish removal, and heavy acrylic grinding. 2. The handpiece features a professional twist-lock mechanism for quick and safe drill bit replacement with a simple turn. The lightweight aluminum alloy body with dedicated cooling vents effectively reduces operating vibration and heat, ensuring stable and comfortable long-term use. 3. The main unit incorporates a built-in UV curing lamp for convenient on-the-go nail flash curing; equipped with a one-touch pause button that retains your current speed setting when paused, making operational recovery quick and easy. 4. A clear HD LCD screen provides real-time monitoring of speed level, rotation direction (F/R), remaining battery power, and pause status. Supports seamless switching between forward and reverse rotation to accommodate both right- and left-handed operating habits. 5. Comes with an optional 12-piece or 6-piece professional drill bit and sanding band set, covering the full process of edge cuticle removal, filing, nail surface polishing, and fast gel removal for both home DIY and professional salon use.