Google has officially taken the wraps off of the Nexus 7, its first reference-grade tablet. The 7-inch slate is the first and currently only device shipping with Android 4.1 Jelly Bean, and takes advantage of its optimization for smaller tablet screens, magazines and movies it's also the first to ship with a finished Chrome for Android. Like what was widely suspected, the tablet is built by ASUS and mostly draws our attention in terms of what we get for the money: that quad-core Tegra 3, 1.2-megapixel front camera, NFC and 1280 x 800, IPS-based LCD are traits we'd normally look for in a pricier tablet. Google is asking just $199 for a 8GB model and $249 for a 16GB version that's a lot of speed for the money, especially with a $25 Google Play credit and a slew of bundled content. There's no SD card slot, however.