Expansion Slot TC70x: User accessible MicroSD with 32GB SDHC and up to 128GB SDXC. CPU TC70x: 1.8 GHz hexa-core 64 bit processor. Radio TC70x: IEEE 802.11a/b/g/n/ac/d/h/i/k/r/w. Data Rates TC70x. Display 4.7 in.