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Adesso 2.4 GHz RF Wireless Mini Trackball Keyboard (WKB-3100UB)
2.4GHz RF Wireless Technology with 12 Channels (65000 IDs per Channel)
Keyboard Layout: 87-Key US Layout
Connect Button for Easy Connection
Power ON/OFF Switch for Increased Energy Saving
Battery Low LED Indicator
Optical Trackball Sensor - 800DPI
2 AA Batteries Included
Video Review Adesso 2.4 GHz RF Wireless Mini Trackball Keyboard (WKB-3100UB)