The Good: The MoGo Talk XD is a solid protective iPhone case with a built-in Bluetooth headset. The headset has a comfortable fit and comes with a variety of earbud tips. The Bad: The MoGo Talk XD lacks a few advanced Bluetooth headset features like A2DP and multipoint. You have to use the phone to adjust the volume. Call quality was also not as good as we hoped. The Bottom Line: The idea behind the MoGo Talk XD is clever, but we don't think the features fully justify its retail price. When we first looked at the MoGo Talk XD, it reminded us of the , a phone we reviewed about three years ago. It was the first phone we reviewed that had a built-in Bluetooth headset stowed away in the back. The idea struck us as clever: Bluetooth headsets are notoriously easy to misplace due to their size, so it made sense to keep one close at hand. \n\nThe MoGo Talk XD takes that concept and brings it to the iPhone, putting a skinny Bluetooth headset inside an iPhone case (there are versions for the iPhone 3G\/3GS and the iPhone 4). The MoGo Talk XD works great as a protective case, with its rubber sides and carefully molded cutouts that fit the iPhone's controls perfectly. There are openings for the speaker, the camera, the charging jack, the headset jack, and the mute switch. The volume buttons and power key on the top are precisely covered by a rubber bumps so they're easy enough to press. Bear in mind that the current MoGo Talk XD is only designed for the AT&T iPhone. \n\nWhat sets the Talk XD apart from other cases is its thick humpback, where the Bluetooth headset is housed. There's a Micro-USB port at the bottom of the case for charging the headset. The headset itself is supremely skinny--when laid flat inside the case it doesn't protrude at all. It has a different look from the rest of the case, as while the case is black, the headset has silver and gray markings.\n\nTo take the headset out of the case, simply press down on the left of the headset and it will pop out. That's because the charging cavity has a slightly deeper divot on the left side. To put the headset back in, you insert it on the left side first too. The headset by itself measures around 2.25 inches long by 1 inch wide by 0.2 inch thick, and is very lightweight. The multifunction call button is on the right side. It's a very tiny button, but it's raised enough that we could still find and press it. The charging points are on the left side. \n\nOn the back of the headset is the earpiece, which can be rotated in and out to open and closed positions. At the tip of it is the earbud. The MoGo Talk XD comes with two different kinds of earbuds in three different sizes. The rounded earbuds are for increased noise isolation, while the slim-line earbuds are to allow more ambient noise. We found the rounded earbuds good enough for our needs.\n\nTo fit the earpiece to your ear, you need to rotate it out at least a couple of clicks. Then you place it in your ear, and close it back down by a click so that the headset feels snug. The mic should be pointed toward the mouth. For such a skinny headset, the fit is surprisingly comfortable, and it feels just like an in-ear headphone.