ANSAI portable vibration sander is indispensable when working with small parts. It is compact and operates on a battery that charges via a USB cable. Voltage is 3.7V. It is quite powerful and capable of working at a speed of 3700 reciprocating cycles per minute. Sanding is performed using special head attachments with adhesive surfaces for attaching abrasive paper of different grits. An intelligent chip ensures overload protection and conserves battery power. The heads and sanding paper can be quickly replaced. Convenient buttons on the housing allow mode selection and operation control, while light indicators show battery level.