3 modes of connectionThe wireless Bluetooth mouse has three connection modes: 2.4G and Bluetooth 4.0/5.0. 2.4G wireless mode: plug and play. Bluetooth 4.0 mode: long press the middle button of the mouse for 5 seconds, the blue light flashes slowly, then search for Bluetooth devices on the device and connect BT Mouse181. Bluetooth 5.0 mode: long press the middle button of the mouse for 5 seconds again, the purple light flashes slowly, then search for Bluetooth devices on the device and connect BT Mouse183. (Note: Not all computers support 3 modes, for example, desktop computers or WIN 7 systems do not support Bluetooth, and computers without USB ports do not support 2.4G connection) Comfortable Grip The smart bluetooth dual mode wireless mouse has a round and comfortable shell that fully fits the curve of the hand whether used with the left or right hand. The ABS material of the buttons increases friction while making the touch more comfortable. Compact and Portable The bluet