ship from Japan A left-handed wired mouse with a side button on the right side of the mouse. A silent switch is used for left and right clicks and side buttons. It is equipped with a blue LED that is more sensitive than the red optical type. With a cursor speed switching function that can change the cursor speed according to the application. You can switch between 800, 1200, 1600, and 2400 in 4 steps. It is a hassle-free and easy connection that can be used just by plugging it in. No need to install troublesome software. It is convenient for both right-handed people and those who want to use their right hand for other things such as the numeric keypad and pen. Reading method: Optical sensor method (Bull-LED) Connector shape: USB (A type connector)