About this item DUAL MODE BLUETOOTH MOUSE(BT 5.1 + 2.4GHz) Dual mode 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. BUILT-IN Y AND AUTO ENERGY-SAVING The mouse built-in rechargeable y, with a charging cable. No need to change ies.To saving power, the mouse will fall asleep after 10 minutes no-operation, it can be waken up by clicking any button. 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; compatible with 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. PORTABLE & POCKET SIZE Lightweight, slim design make it perfectly for travel, easy to put in your laptop bag or pockets.