Is this thing stereo? http://www.lightinthebox.com/Sunglasses-with-Bluetooth--SM04-3-_p15205.html I've seen these elsewhere, too. Google for "SM04-3". I am wondering if these things are stereo bluetooth (A2DP). I can't find any indication of that in the specs. I kind of doubt it, from the price; I doubt you'd see an A2DP headset for $22. On the other hand, why would the headset have two earphones if it was an ordinary monophonic bluetooth headset?