Got myself a Jabra Clipper
...and thought you might want to know my impressions.
Sound is quite good for a BT device. If I unplug the headphones from the Clipper and connect them directly to the 7.7 the difference, although audible, is not that off-putting (...the sound levels, overall, are quite low...but that's a problem of the 7.7, one that I am still in the process of determining if it is a trait of this particular model or rather a characteristic of my own copy).
The internal battery charge lasts for quite a long time (a couple of days, in intermittent use), as the device auto shuts-off after a while, if not in BT active use.
One thing: The "clip" does not have a pivoting point but rather works as a "U" clip.
This means one has to struggle to clip it to any piece of flexible clothing which, I think, works a bit against the whole concept it was designed around, in the first place.