1. Product description: Rechargeable Bluetooth mouse (BT 5.1 + 2.4G wireless), slim/silent (800 - 1200 - 1600). 2. Purpose: The wireless mouse is designed to be very compact. It can be easily put into a laptop bag, making it ideal for travel. 3. Two modes: BT5.1 + 2.4G. You can use the mouse on two computers, one with a Bluetooth connection and the other with a USB interface, making your life easier. 4. Silent design: The two buttons are specially designed to make no sound when clicked. To avoid disturbing others, you can focus in public places such as libraries, offices, living rooms, cafes, etc. 5. Working distance: It has a 10 - meter working distance. Three adjustable DPI levels (800 - 1200 - 1600 DPI) allow you to freely control the mouse speed. 6. Rechargeable design: Our rechargeable mouse has a built - in rechargeable battery that can be charged via a USB cable. The excellent automatic sleep technology helps ensure a long battery life.