Or maybe you rely on a Bluetooth headphones paired with your computer for two-way communication via services like Skype or Discord. You likely use Bluetooth as a two-way connection between your smartphone and your favorite set of wireless earphones, one that allows you to stream audio and send simple control commands-like skipping audio tracks, or answering/ending phone calls-between one and the other.
And that's probably exactly the sort of scenario that comes to mind when you think about wireless headphones. In other words, a replacement for a single wire.
When discussing Bluetooth, we often describe it as a simple, low-energy, wireless connection between two devices.