BenQ Zowie ZA12 E-Sports Ambidextrous Optical Gaming Mouse Ambidextrous mouse developed for palm and claw grip usage Two thumb buttons on both sides to comfortably serve left- and right-handed users Plug and Play (no drivers needed) Easy to switch between left- and right-hand functionality 400 / 800 / 1600 / 3200 DPI adjustment Adjustable USB report rate 125 / 500 / 1000 Hz Perfect lift-off distance = 1.5 1.8mm~ Please refer the User Manual before use.