Acer didnt just bring a couple of new tablets to Vegas this year, but something to make calls with, too. The latest addition to its Liquid range after the top-spec S2, the Z5 is very much a value proposition, as the raw numbers show. Were looking at a 5-inch, 854 x 480 display, 1.3GHz dual-core Mediatek processor, 512MB of RAM, 4GB of internal storage (expandable via microSD), and a 2,000mAh non-removable battery.