Ergonomic 2.4G Rechargeable Wireless Vertical Mouse

High sensitivity: Level 3 intellectual property rights can easily handle any situationFive-key design: five operation keys for more convenient useOptical engines: more precise positioning responseErgonomics: designed to prevent hand fatigue and feel comfortable and softLook at the last photo, there is a USB receiver that will go into the computer, you need to turn on the mouse, the USB microphone just to charge the battery.If the mouse is not working, the switch button at the bottom may not be lit.First step of mouse operation:Unplug the USB sensor at the bottom of the mouse and connect it to the computer.Turn on the switch at the bottom of the mouse(it flashes red when turned on, which means it is not turned on or there is no power supply)Don't forget to charge the mouse. You won't get used to it for the first time, and after a while you will feel comfortable.