If you're looking for a gaming mouse, this could be just the thing. If you're looking for a mouse for your child, this one could work very well.
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Mad Catz R.A.T. 6+ Gaming Mouse, USB 2.0, Adjustable Wieght and Palm Rest, Ergonomic Design, Adjustable up to 12000 DPI with Gaming-grade Pixart PMW 3360 Optical Sensor and 11 Programmable Buttons