-5 million times of keystroke life -Ergonomic design -2.4GHz wireless transmission -1000/1200dpi -1 year warranty 2.4GHz Mini USB ... .5V/15mA7)USB:ver2.08)Connectivity Technology: 2.4Ghz Wireless9)Wireless Operating Distance :10m to 15m10)Battery Size Support : 1 x ... , right, scroll, page up, page down, resolution option)12)Superior wireless optical sensor.13)Use for home or office use.Specification ...