yea GN Telecom is OEM Jabra.
There are a few revisions of the headsets. The earliest version has a line down the middle of the mic part and this one sucks really bad. It cracks down that physical line and the battery dies very quickly.
The newer version of it doesn't seem to be nearly as bad. I've had good luck after replacing those first versions.
Bluetooth pairing would be nice, but the 33ish ft restriction of bluetooth is so limiting. I like the DECT 200+ ft.