- Speed adjustable for Multical Using: 0-15000 RPM is suitable for polishing nails, cuticle grinding, shaping and removing dead skin. 15000-25000 RPM is suitable for removing gel nail polish. 25000-45000 RPM is for acrylic nails and other professional manicures in a nail salon. - 2024 New Design Aesthetically: Streamlined appearance that is fashionable and convenient to carry. Includes multiple drill bits in the package for different purposes, meeting varied usage needs. - Long Endurance Rechargeable Battery: Built-in 3600 mAh large capacity battery. 3.5 hours to fully charge and can provide 4-10 hours of operation. Lower speed extends running time. Charged by Type-C USB port. Can also be used as a power bank with USB DC5V output for emergency charging. - Digital LCD Display: Knob controls speed with a digital display showing 0-45000 RPM (represented as 0-45 on the display). Buttons control power on, suspend, forward and reverse rotation. - Engineering Human Body Design: Ergonomically designed polishing handle for a comfortable grip and easy bit replacement. Suitable for prep nails, removing gel polish, acrylic nails, dip powder nails, thick nails, pedicure, wood carving, and engravable leather goods. Suitable for home use and nail salon settings.