Windows 7 often defaults to "Hands-free AG Audio," which sounds like a low-quality phone call. To fix this:
If you’ve just bought a pair of popular (often sold under brand names like Acesori, Mpow, or generic OEM) and are trying to use them on a Windows 7 PC , you might have run into a common problem: Windows doesn’t seem to find the driver, or the headphones pair but don’t play sound. p47 wireless headphones driver windows 7
: Combines Bluetooth wireless, a MicroSD/TF card MP3 player, FM radio, and a 3.5mm wired headset option. Windows 7 often defaults to "Hands-free AG Audio,"
Even after pairing, Windows 7 may still try to play sound through your speakers. a MicroSD/TF card MP3 player