... up and down , page up and down, play and pausePrecision optical sensor.works on most surfaces.Wheel scrolling technique. Scroll up ... -color support.Full-function three button mouse with easy scroll/zoom wheell wheel/WorksFor the laser solution, press the right, left ... DPI from 800,1200, 1600, 2000. usb 2.0 wired optical mouse with retractable cable