MK802IV: Rockchip 3188 Quad core, 28nm, 1.8GHz Cortex-A9 * MK802IV: Android4.1(will update to Android4.2 with Miracast); Build in Bluetooth * MK802IV: Memory: 16GB (System divided the whole storage into seven partition, only two partition visible, the other five partition has been occupied by Android system which is invisible. The balance space is equal to the sum of two partitions.) * Wireless Air Mouse: Operate range: 10M(Semi diameter); Transmit way: 2.4G RF. * Wireless Air Mouse: Support Systems: Windows(all) / Linux / Mac OS / Android PC OS.