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Pro Scroll wheel has options
You can switch between the standard, precise scroll wheel, or a friction-less scroll for scrolling fast.
Pro Long battery life
It has up to a 3 year battery life (using 2 AA batteries).
Con Fairly heavy
Because the mouse uses 2 AA batteries, it is fairly heavy. However you can make it lighter by only using 1 battery.
Con The DPI cannot be changed
There is no ability to modify the DPI (permanently set at 1000 DPI).