Features:compatibility: 3-in-1 cross-platform mini bluetooth keyboard,designed for ios android windows systems.all bluetooth-enabled tablets, laptops, and computers.bluetooth: easy set-up, cable-free connection.slim: compact design is travel-friendly.power supply: 2 x aaa batteries (not included)device dimensions: 285 x 120 x 16 mmsupports:ipad / iphone 4 & 4s / iphone 3g & 3gs / ipod touchbluetooth-enabled pc / laptops with windows 98 / me / 2000 / xp / vista / 7 os systemsbluetooth-enabled imac / macbooks with mac os x 10.2.8 or above (note that some exceptions may apply: we guarantee hassle-free support and easy returns/exchanges)smartphones with android 3.0 and abovewindows mobile 5.0 and abovenokia s60 second edition and abovetoshiba stack, widcomm btw, or ivt bluecoleilpackage includes:1 slim bluetooth keyboard