... 5000 hours standby time. •Snap-in USB receiver. •Compatible with PC, laptop, tablet PC, Google TV, IPTV, SmartTV, PCTV, HTPC, Projector, etc. ... backlight design, dark environment can also be used normally.1.4 Mini USB interface, the charging voltage: DC 5V.1 ... array keypadOS CompatibilitySupport Windows98, 2K, XP, VISTA and Windows7 Android 2.3, MAC.OFNSupport optical finger navigationRF & BT working ...