ship from Japan A left-handed wireless mouse with a side button on the right side of the mouse. The left and right clicks and side buttons are equipped with silent switches. With the 2.4GHz digital band, which is resistant to radio interference, stable data communication is possible over a wide 10m radius. This is only possible when there is no radio interference. The cursor speed can be changed in three steps: 800, 1200 and 1600. It is equipped with a blue LED that is more sensitive than the red optical type. It is equipped with a power ON/OFF switch that prevents the battery from being drained when not in use. The receiver is simply inserted into the back of the mouse body for easy storage. It’s also convenient for right-handed people who want to use their right hand for other things, such as the numeric keypad or a pen. Reading method]: Optical sensor method (Blue LED) Connector shape]: USB (A type connector)