Description: Dual-mode Bluetooth mouse (BT 5.1 + 2.4GHz) dual-mode wireless mouse realizes the free switching of one mouse between two devices through a simple toggle switch. It can connect one device via Bluetooth and the other via a 2.4GHz USB receiver.Note: You cannot use Bluetooth mode and 2.4G mode at the same time. The WIDE COMPATIBILITY 2.4GHz mode is suitable for laptops, desktops or any device with a USB port, just plug in the USB receiver and play directly. The Bluetooth mode is suitable for Windows/Android/MAC OS system. Note: BT5.1 system requirements: Windows 8.0, Windows 10 or higher; MacOSX 10.10 or higher; iPad OS 13 or higher/Android 5.0 or higher. Before using 3 adjustable DPI levels and silent clicks between 1000, 1200 and 1600, please check or update your operating system for different needs. The special silent design of the left and right buttons allows you to concentrate on work or play games without disturbing others. Built-in battery and automatic energy saving The mouse has a built-in rechargeable battery with a charging cable. No need to replace the battery. To save power, the mouse goes to sleep after 10 minutes of inactivity and can be woken up by clicking any button. Portable and pocket size The lightweight, slim design makes it ideal for travel and fits easily in your laptop bag or pocket. This mouse supports dual mode connection - 2.4G wireless and bluetooth mode, you can switch the mouse freely and easily. How to use it: A. 2.4GHz mode: Switch to the "ON/OFF" button on the right. Plug the receiver into your computer's USB port, then you can use the mouse in 2.4GHz mode. B. Bluetooth Mode Turn on the Bluetooth function of the device and switch to the "ON/OFF" button on the left. (Bluetooth mode) Search for Bluetooth products and find a BT5.1 mouse for pairing. Then you can use the mouse in bluetooth mode.