... 66 keys lay out Bluetooth Version: 2.0 Operating Distance: About 0 to 10 m (0 to 33ft) Built-in rechargeable Li-ion ... Mobile Phone System: Google Android, Windows Mobile(5.0 and later), Nokia Symbian S60(V3.0 and later), iOSiPad, Mac OS, iPhone4Windows OS ... running Windows 98, Me, 2000, or XPWindows Mobile 5.0/6.0 Nokia mobile in Symbian S60 3rdBluetooth-enabled Macintosh running Mac ...