Wow!
I'm so surprised. These are fantastic at $27.
They are not expensive looking, and the charging case is a bit plasticy and a little bulky.
BUT they sound great, and the comfort is amazing (in my ears). Even with the default mounted silicon tips I get a good seal and amazing bass.
Edit: They sound a bit "narrow", so the stereo imaging and soundstage is not as good as the more expensive ones, but the mids are smooth, the highs are quite detailed (no hiss or sharp S'es like the E8 with silicon tips) and the bass is tight and punchy without being to overwhelming.
Edit 2: The BT connection is rock solid! When the E8 have dropouts several places in my apartment, I have NO dropouts with the QCY. (Thank you BT5.0)
I can confirm they support AAC and there are no SBC noise (guess they use BT between them, and not NFMI) on the left and crackle on the right (as the 10x more expensive MTW and E8 have)
I just have to say Wow again...