K4-3D - USB, 800 dpi, 4 buttons, 16 in 1
A4Tech K4-3D, Black, Optical, USB Type-A, 800 DPI, Black
A4Tech K4-3D, Black. Movement detection technology: Optical, Device interface: USB Type-A, Movement resolution: 800 DPI, Buttons quantity: 4. Product colour: Black