Dual Mode Wireless Mouse (BT 5.1 + 2.4GHz)]The Dual Mode Wireless Mouse enables free switching between two devices with a simple 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. Built-in battery and automatic energy saving]The mouse has a built-in rechargeable battery with a charging cable. To save power, the mouse will go to sleep after 10 minutes of no operation and you can wake it up by clicking any button. Wide Compatibility]2.4GHz mode is suitable for laptops, desktops or any device with a USB port, just plug in the USB receiver and you can play directly. Bluetooth mode is available for Windows/Android/MAC OS systems. Note: BT5.1 system requirements. Windows 8.0, Windows 10 or later; MacOSX 10.10 or later; iPad OS 13 or later / Android 5.0 or later. Please check or update your operating system before use 3 adjustable dpi levels and silent click]. Between 1000, 1200 and 1600 for different needs. Special silent design of the left and right buttons allows you to concentrate on your work or game without disturbing others. Portable and Pocket Size]Lightweight and slim design makes it perfect for travel and easy to carry in your laptop bag or pocket. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.