Connectivity: USB 2.0 2,4Ghz Dongel, optical sensor, high sensitivity in comparison with other conventional optical mice. Sampling rates 1000 - 1600dpi (freely selectable with dpi selection switch) / precise operation on nearly every surface 5 buttons & scroll wheel, left & right mouse buttons, Forwards & backwards button optimally provides remarkable comfort while surfing the internet. Easy to operate buttons and scroll wheel Prevent possible mouse arm or tennis elbow (RSI syndrome). The right choice for internet surfers as well as for people who work long periods on the computer every day. Improved handling compared with conventional mice. Colour: black. For computer / notebook / laptop / notebook on Microsoft Windows XP / Vista / 7 / 8 / 8.1 / 10 / 11 (32- und 64-Bit), MacOS and Linux. ATTENTION: The mini USB (to transmit and receive the signal ) is located in a compartment on the underside of the mouse.