Adjustable Speed: Set your desired speed with the dial, offering stepless speed adjustment from 0 to 35,000 RPM to meet your various needs. Forward and reverse rotation are selectable (F/R), suitable for both left and right-handed users. A professional electric nail file for home use and nail salons. Convenient Rechargeable Design: The built-in 4000mAh battery allows for continuous use of over 12 hours after a 3.5-hour charge. You can also use it while charging. The portable design makes it easy to carry and take with you, perfect for travel or on-the-go use. Smart LCD Display: The LCD clearly shows real-time speed, rotation direction, and remaining battery power. More convenient and practical to monitor. Low Noise, Low Heat, Low Vibration: The high-quality aluminum alloy casing ensures efficient heat dissipation. The latest vibration damping design effectively reduces vibration and noise. Use it anywhere without worrying about disturbing others. Professional Nail Care Kit: Includes 1 electric nail file with 11 nail drill bits for more efficient grinding. Perfect for manicures, pedicures, polishing, removing excess cuticle, and easily removing acrylic nails and dead skin. Ideal for beginners and professionals!