Product Features:The Pro Power 20K is a powerful 30,000rpm professional rechargeable Filing System providing the Professional Nail Technician with the power and versatility to complete any manicure or pedicure service. Its cordless rechargeable design allows for convenient positioning on any workstation.Clips conveniently to your belt or place in the Holster provided allowing freedom of movement.Included 110v – 220v controller allowing you to use the unit anywhere in the world.Full 1 Year Warranty from Manufacture.Extended Warranty Option Available.Up to 10-hour battery life.