Product Details Key Specifications/Special Features:Features:Optical mouse can work on almost any surface, can also eliminate dustErgonomic design that makes it more comfortable3D standard optical mouseSpecifications:Interface: USBHardware resolution: 800dpiMouse buttons: 2 buttons + 1 wheelMicro switch: 3 million cycles lifespanEncoder: opto-mechanicalBrowse way: vertical + horizontal scroll driver