USB Foot Pedal 2 Position 4 Keys Double Switch Dual Mode Connection Programmable Computer Keyboard for Instrument Control Item Type: USB Foot Pedal Material: ABS Mouse Function: Can Be Set As Shortcut Keys Such As Left Mouse Button, Right Mouse Button, Middle Mouse Button, Forward and Backward, Etc. Keyboard Function: Shortcut Keys for Saving, Copying, Pasting, Switching Programs, and Opening Task Manager Can Be Set Game Function: Can Be Set As the Up, Down, Left and Right Buttons of the Gamepad String Function: You Can Set Up a Quick Input String, Such As "how Are You Today" Multimedia Function: You Can Set Shortcut Keys Such As Pause, Play, Previous Song, Following Song, Open My Computer, Etc. Connection Type: Wireless BT/Wired USB Number of Keys: 2 Position 4 Keys Switch Type: Mechanical Switch Battery Type: 2 x AAA Batteries (not Included)