2.4GHz radio frequency, 10 meters effective working range, 360-degree navigation, sleeck and elegant design. Build in 19mm optical trackball&mouse key. KEY: Including 45 hot keys&2 mouse keys. USB remote interface. Microsoft Windows XP MCE/Vista compatible. RF technology frees you from the cables. Bounce time: Less than 10msec. 2-AA batteries included for up to 3 month use. Non-skid rubber fit. MCE Keys: My music, my video, my pictures, my TV, Guide, live TV, Recored TV, DVD menu.
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