Unnecto Air 4 has display Size 4.5", operating system Android 4.4.2. The device has ram 1 GB too, card support is microSD, up to 32 GB, it has 8 GB, 1 GB RAM hard disk. Back camera 8 MP is awesome, front camera 3 MP is also not bad. Air 4 has power storage, Up to 8 h (3G). Device status is Available