Part NO. Blue:31030107101;Red:31030107102;Silver:31030107103;Pink:31030107104
Buttons Four (left, right, middle button with scroll, and charging button)
Port USB
OS Support Windows® 8 /Vista/XP or Mac OSX 10.4+
Battery 2700mAh Li-Polymer
RF frequency 2.4GHz
Resolution(dpi) 1200 dpi Infrared