Sony is unveiling a new tablet at Mobile World Congress that is sure to turn a few heads. The Xperia Z tablet is not only the world's thinnest 10.1-inch tablet at 6.9 millimeters, but it's also waterproof in up to three feet of water for 30 minutes, and weighs just a bit over a pound. But it's svelte design also makes it a competitive entry against the newest iPad. How does it stack up in other ways? Let's take a look.
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