I looked for a long time to find a compatible, lowcost and good sounding BT headset. This is what I found and I highly recommend.

Creative Labs WP-380 Wireless Bluetooth Headphones with Invisible Mic and NFC

And a BT adapter to go with it.....

Plugable USB Bluetooth 4.0 Low Energy Micro Adapter (Windows 8, 7, XP, Linux Compatible; Classic Bluetooth and Stereo Headset Compatible)