Description: 【Material and Design】: Manicure Pedicure Tool is made of ABS and equipped with a ceramic grinding head to ensure long term use. Its compact size (13.2cmx2.1cmx2cm) makes it easy to carry and store 【Advanced Technology】: Nail Grinder Tool has 3 speeds adjustment, forward and rotation options, convenient charging and lighting for nail care 【Versatile Use】: Electric Nail File is suitable for filing, grinding, polishing nails and removing skin, suitable for professional beauty salons and personal routines 【Efficient Power and Speed】: Drill Machine can be used continuously for about 3 hours on a single charging via the USB interface (DC5V). It operates at a voltage of 3.7V and has a speed of up to 15000 RPM. 【Package Included】: Each package has a nail grinder (including a grinding head), five extra grinding heads as gifts Specification: Working voltage 3.7V Rated power 2W Speed 15000RPM Suitable grinding head 2.35mm Capacity 500mAh Working time about 3 hours Size Chart: 13.2cmx2.1cmx2cm/5.20inchx0.83inchx0.79inch Package Includes: 1 nail polisher (including 1 polishing head) 5 polishing heads Note: Please allow slightly errors 1-2cm differences due to manual measurement.