PUREX Technology Ergonomic Vertical Wired Mouse Supports 600/1000/1600 DPI, Backward/Forward Control Thumb Buttons, Removable Palm Rest - Reduces Wrist and Forearm Discomfort - PXE-M618BU USB wired mouse supports hardware 600/1000/1600 DPI switch Detachable non-slip palm rest Backward and Forward side buttons Retail box