From the Manufacturer
http://zowie.benq.com/mice/za11
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Mfr Part Number: ZA11
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Features:
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Ambidextrous mouse developed for palm and claw grip usage
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Two thumb buttons on both sides to comfortably serve left- and right-handed users
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Plug and Play (no drivers needed)
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Easy to switch between left- and right-hand functionality
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Type: Wired
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Interface: USB
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USB Report Rate: 125 / 500 / 1000 Hz
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DPI (Dots Per Inch): 400 / 800 / 1600 / 3200 DPI
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Perfect Lift-Off Distance: 1.5 ~ 1.8 mm
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Operating System: Window 8/ 7/ Vista/ XP/ 2000; Mac OS X v10.2 after
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Color: Black
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Dimensions: 128.0 x 67.0 x 40.0 mm