What makes headphones stereo or not? This seems like a simple question with a simple answer but it is far from easy. So lets start with the definition. Stereo: audio signals are routed through 2 or more channels to simulate depth/direction perception, like in the real world. So when it comes to the actual sound, it does matter how the file is created and the quality of the headphones isn't really determined by the two channels. The idea is replicating "the real world".
Watch more headphone videos! That headphone link will take you to the Scosche YouTube channel. They have some great videos showing their entire line of headphones. Some of them are bluetooth stereo headphones, but most of them are wired. Before you buy, make sure you have the right ones. They need to say bluetooth, or wireless.