DUAL MODE BLUETOOTH MOUSE (BT 5.1 + 2.4GHz) : Dual mode wireless mouse realizes free switches between two devices with one mouse only by simply toggle switching.It can connecting one device through Bluetooth and the other through 2.4GHz USB Receiver. Note: You can't use Bluetooth mode and 2.4G mode at the same time. WIDE COMPATIBILITY : 2.4GHz mode works with laptop, desktop or any device with USB port, simply plug the USB receiver and play directly. Bluetooth mode works with Windows/ Android/ MAC OS system. NOTE: BT5.1System Requirement: 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 the operating system before using. 3 ADJUSTABLE DPI LEVELS AND SILENT CLICK : Among 1000, 1200 and 1600 to meet different needs. Special soundless design for the right and left buttons, make you concentrate on working or playing games without disturbing others. BUILT-IN BATTERY AND AUTO ENERGY-SAVING: The mouse built-in rechargeable battery, with a charging cable. No need to change batteries.To saving power, the mouse will fall asleep after 10 minutes no-operation, it can be waken up by clicking any button. PORTABLE & POCKET SIZE: Lightweight, slim design make it perfectly for travel, easy to put in your laptop bag or pockets. 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 "ON/OFF" button to right.And Plug the receiver into the USB port of your computer, Then you can use the mouse in 2.4GHz Mode. B. Bluetooth Mode Turn on the device's Bluetooth function Switch to "ON/OFF" button to left. (Bluetooth mode) Search the product of Bluetooth and find BT5.1 Mouse to pair. Then you can use the mouse in Bluetooth Mode. Note:System Requirement: iPadOS 13 or later, iOS 13 or later, Windows 8/ 10 or later, Mac OS X 10.10 or later, Android 5.0 or later. Package Included: 1 x Wireless Mouse. 1 x USB Receiver (In the battery compartment of the mouse). 1 x USB Charging Cable. 1 x User Manual. Note: 1. It's out of power if the mouse cursor moves slowly or stop moving. Please recharge it. Note: Please do not charge the mouse with mobile phone charger. 2. Please charge the mouse for 2 hours before the first time to use it. The blue light beside the scroll wheel will be on while charging, and then goes off when the mouse is fully charged. 3. Not all computers support two modes. For example, Win 7 system does not support Bluetooth mode.