The designwireless mouse is very small. It slips easily into a laptop bag and is perfect for travel. And the Nano receiver can be stored on the back of the mouse when not in use. Two modes: BT5.1 + 2.4G , you can use the mouse on two computers, one using Bluetooth connection and the other using USB interface to make your life easier. Silent designThe two buttons are specially designed to be silent when clicked. To avoid disturbing others, you can focus on libraries, offices, living rooms, cafeterias and other public places. Working distance10 meters working distance, 3 DPI levels adjustable (800-1200-1600 DPI) let you control the mouse speed freely Rechargeable Design: Our rechargeable mouse has a built-in rechargeable battery that can be recharged via USB cable. Its superior auto dormancy technology helps ensure long battery life. Number of shipments:1 pcs