Sound is good, and it connected right away
926057
Sound is good, and it connected right away, but there is a loose piece in one of the ears that constantly gets bumped around, so that is pretty distracting unless I am sitting still. I am not sure if it was just my pair or just the way the headphones were manufactured.
Either way, decent if you are just chilling, but if you seek to do anything active I would advise a different headset.
4250545
I like the sound it met my expectations. however it only connects to one device at once and you need to turn off the Bluetooth of previous device to disconnect to it connects to other device.  I know some speakers can device multiple devices so there is no need for that kind of action. Eitherway I recommend this speaker.
1443055
This bluetooth works and it connects your devices,
2360849
Works well and sounds great, no problems so far!
2804592
Feels comfortable, sound is good, easy to use
2736660
It's smaller than I thought it would be, but sounds great for the size. Sound is deep, and not tinny at all. The orange color looks great. Seems pretty water-resistant, which is good, 'cause we keep it in the bathroom next to (but not in) the shower for morning listening.

Docking it one star because the Bluetooth pairing is a bit inelegant when you're using it with multiple devices. If you plan to use it with just one device, it's automatic and effortless. Switching devices can get a little annoying, but it's only a few clicks on the phone.

The range is good. I've gotten about 25 - 30 feet away with my phone before the signal starts to break -- but that's through a couple walls, tile, plumbing, etc. If it were an open space it would probably be much better.
2064900
Bluetooth connected straight away, nice and loud, battery life seems good so far.
267305
Sounds great, connected to my Dot. Unfortunately the speaker forgets that it is connected to the Dot and starts blinking the "Pairing" mode light non stop. Permanently. No way to stop it.
2373667
So far so good, they synced with my iphone right away without a problem.  The sound is clear, I hope these last for awhile!
2366936
The Jabra Sport headset is a great little package.  I've had it about two months, and it's seen quite a bit of use, has been reliable and something I hate to be without.  The relatively bulky cable between the two solid earphones never seems to tangle.  I find it quite comfortable with the standard round rubber caps around the speakers.  The sound is good, and it works well for phone calls.

It's great that it can connect to two devices -- I use it with both my iPhone and my iPad without any setup issues.  (I wish it did three, but no.)

There are several negatives:

As others have noted the Bluetooth connectivity seems to be finicky outdoors.  The instructions say to keep it on the right side of your body (presumably the receiver is in the right earphone casing so there's a more nearly line-of-sight path), but even so I find it loses its connection to my phone pretty often.  (I haven't tried an armband, just pockets on the right side of my jacket or pants.  I don't have this problem indoors.)

I was excited about the FM tuner feature, but I can't get anything but static out of it.

The rubber earbud caps fall off pretty easily, and thus get lost.

The battery is good for about two hours of listening, OK but not great.

Bottom line -- I think I lost it today, left it somewhere.  If it doesn't turn up I'll certainly be buying another one!
3516111
The speaker connected to my phone and was running within five minutes of taking it out of its package.  Compact and provides decent sound.  It's not going to fill up a large room, but it sounds fine in a bedroom, the kitchen or basement while doing chores or simply relaxing.
4391642
The sound is good. A little awkward to join because of the Bluetooth button location.
3533321
Good sound for its size and the connections work really well. I've had issues with other similar speakers where I have speakers plugged in and then try to connect via bluetooth, but these handle that issue just fine. So I have a cheap old MP3 player that plays bedtime music as the kids go to sleep, and then I connect my phone in the morning right from my bedroom, which overrides the aux jack input, and I can start playing something to help them wake up ("Don't Worry, Be Happy" is a favorite).
3854697
I was able to set it up and use it right out of the box! Sound is good. It does cut out quite a lot when I first start listening, but then it works fine! I even left my phone in the other room and it was still connected.
4335031
I bought this for myself and a cardo scala 500 for my wife.

This Plantronics 320 connects within a second or two every time, as opposed to the scala which takes 2-4 seconds.

The sound quality is good, both ways.

The reception is good, as well, but if there's anything between the headset and the phone, you'll start to hear static. When driving, for instance, if the phone is on the dashboard, the sound should be clear. If it's in your pocket and you're holding a briefcase, expect some static unless you happen to have it on the ear on the same side as the pocket the phone is in. The Scala will, on the other hand, usually, work through walls with no static at all.

It's a good headset, and it fits well and transfers from one ear to the other in a snap, but its range is certainly a bit limited.
4718230
Good sound! Connects well. I seen the other reviews about how uncomfortable they are or how they fall off but I haven't had a problem with that and I use it for the gym. It's pretty good for the price!
2066272
It auto connects to my phone when I get in the car.  It sounds great, on par with direct cable connection.