It's light and unobtrusive, yet sounds great!
596431
Wonderful device, I use mine primarily at the gym.  It's light and unobtrusive, yet sounds great!  I wear in-ear hearing aids so these are a perfect solution.
2410769
Sounds great easy to install and loaded with features at a great price!
3604564
I bought these after an exhausting search for something light, with good sound, that wasn't gonna require the sale of any body parts! What can I say about them??Hmm!...They deliver on every point! The sound out of these beauties is excellent! They are so light that I can wear them for extended periods of time without a problem! Sometimes I'd forget they were there if I didn't hear the great sounds coming out of them! One other thing: even though they are not noise cancelling, they still block outside sounds very very well!
4497533
I see no need for moving parts in a head unit, and this one has almost none.  The sound quality is very good, better than the expensive Clarion unit I had before.  This unit is very lightweight but still has a large heat sink on the back, larger than any other unit I've owned.  This unit also draws no power with a memory lead when the car is off, that is one less wire to connect.  The aux port does not pick up much static, I had to turn the volume up to ear blistering levels in order to hear any, with the music paused.  The black fascia theme and ordinary text display is very attractive in my opinion, compared to the gaudy flashing lights of other units.

The only thing I dislike is the source button is quite bright, and there is no rear auxiliary port.  Most units these days do not have rear auxiliary ports.

I have not used the Bluetooth features yet, and will most likely rarely use them. I have not used the USB feature yet either.  The tuner seemed to have reasonable sound, and locked onto the station quickly without fussing with nearby channels.
1976936
At first, I didn't expect the sound when I decide this headphone. I bought this just cause of tangle. But it's sound is good too! (Of course it never tangle too.) Also the zip one help to find right side and left side of headphone easier than other nomal headphones cause I can get front side and back side lightly. And glow thing is really useful to find when I want to listen music in the dark. The only thing that I hope to improve at this headphone is little heavier than the other headphones. But it's not that haevy which dose not bother me. However, I'm sooooooo satisfied!
2365174
I've never had this type of bluetooth before-- the behind the ear with stick microphone. When I saw how large it was (compared to my others) I was worried it would be heavy. It is actually AMAZINGLY light. However, I do wear glasses, and it is kind of a big lump of stuff to have behind one ear (the only thing I didn't like about it, and the reason for 4 rather than 5 stars).

Also, it does have a very distinctive charging set up. If you're used to charging all your bluetooth devices with the same charger you'll have to make allowances for this unit. It has a charger unlike any I've seen for a telephone-related device. It looks like it would be pricy to replace if lost.

The sound on this unit is fantastic. It is way above the quality of my Plantronix 3xx or Motorola HK250. I don't listen to music on my phone (keep wanting to get around to that, maybe this earpiece with make me hurry up) but I am on the phone A LOT every day, so it is nice to have something that delivers clear sound and means I don't have to keep saying "what? WHAT?" Also, it does seem like the background noises aren't as loud as my others. For instance, sometimes I will hear things like bird noises that are so loud they overpower the voice of the person I'm talking to. This one seems to have less of that.

I also thought the voice activated commands were nice and not something I had to install (which I would NEVER) get around to. When I'm playing with clay or working in the garden it is not always easy to push the small button on my other bluetooths or fish my phone out of my pocket in time. Being able to say "answer" is really a cool function.

I think this bluetooth has awesome sound and functions. I'm sure I'll get used to the bulky feeling of bluetooth and eyeglasses over time, but it is something to consider if you wear glasses all day.

Update: 11/4/12

I find that I avoid using this bluetooth until my other is dead. It's just too awkward to wear with glasses and tends to fall off if I move my head too quickly or bend down. Great sound and features, but just too much to have behind your ear with glasses.
2667976
I highly recommend these headphones, they are light and comfortable, and have a superb sound quality and robust construction, the sound signature is rather neutral, so there is no "bass boost" or "treble boost", they sound really clear and bring details other headphones can't.

While most of the music sound really decent, Pop, Electronica, Alternative,  Classical music and acoustic, sounds especially great.

The only thing that I didn't like is that they used plastic where the earpads are mounted, they would have looked better with aluminum.
4306845
beautiful soundstage for the price, very light and unobtrusive when wearing them... at times you forget they're even on you.  All the extra goodies with wire and ear covers make for one hell of a deal
2586110
I like the sound of this.  A lot of people consider themselves audiophiles and seem to be able to detect differences in sound quality far beyond what I'm able to detect.  I think it has to do with too many Deep Purple and Black Sabbath concerts in my youth.  Anyway, I use this in environments that make it difficult to detect subtle sound quality differences anyway; while camping outdoors, working in the garage, etc.  Usually there's enough background noise that you'd never be able to tell the difference between this and a unit that costs twice as much.  Lots of good bass without annoying resonance peaks and I love the fact that you can charge your phone from it if needed while using said phone as the music source.  The Bluetooth range seems to be about 30 - 40 feet, although I haven't actually formally tested it.  I bought another one for my niece and she loves it too.  It's nice, I can certainly recommend it
2764998
I love being able to carry this around without worrying about a thing!  It sounds
great with any amplification source.
45693
it sounds great and light as well.

I really like the product so far, and i would like to buy the same product later
1076850
Easy to use, light weight, improved recorded sound!  I use it with students and it seems to be holding up.
25791
This is simply a great mute!  I was attracted to it because of its very light weight...after becoming more familiar with this mute you will enjoy its evenness of response and intonation.  Smooth and easy to the lowest notes and excellent presence and projection for section/lead use.
2549132
does what it says... and sounds pretty good too!
3008784
I've owned this headset for a little under a week, so I haven't been able to truly put it through its paces. With that said, here are my initial thoughts:

There's a lot of good to talk about with this headset. Despite its bulk, the headset is surprisingly light and comfortable. It's slightly tight, but not uncomfortable (I wear XL hats, so perhaps it will work well for others). The audio is very impressive (particularly the surround sound feature), and I've enjoyed listening to audio books, making skype calls, and listening to music. The external earcup provide storage for the USB dongle, which is a great feature.
965207
First off, let me confirm the noise problem.  Plugged into my custom PC/Mac's USB ports directly, the digital noise is almost unbearable between tracks.  It seems to be picking up activity in the other USB ports as you can hear distinct noises when you move the mouse, click on something, scroll, etc.  So I plugged it into one of the USB ports on my monitor and no problem.  No noise when plugged into a stand-alone USB hub either.

Other minor annoyances: Overly bright and unnecessary blue power LED, easily remedied with electrical tape.  Lack of auto-switching: When you plug in headphones, the speakers don't shut off.  This has me pulling and re-plugging the mini jacks often, which will probably shorten their lifespan.

So, with the caveat that it needs to be plugged in via a USB hub of some kind, this thing is awesome!  It more than doubled the max volume of my desktop speakers (M-Audio AV-30s) which had sounded weak and underfed with the on-board audio jack.  They sound better at lower volumes too.  With headphones plugged into the headphone jack, I was even more impressed at the clarity and fullness of the sound.  The sound to price ratio more than overcomes the noise issue and other little problems.  It was also recognized immediately in OSX, totally plug'n'play.

If you can live with the issues I already discussed, you will be really happy with this little guy.
4650487
-=-=Review Update=-=-

I've owned this for four months now, and I am well pleased.
I started out with a pair of extremely simple speakers (leftover satellites from a cheap surround system), and the vocals and mids sounded fine, but shallow.
A short while later I've added a Subwoofer (Polk Audio PSW10 10-Inch) to the setup, and now it magic!
The Orb sits right under my desktop screen, and the speaker chords run out the back and up the wall. The sub is neatly tucked under the desk, and everything is in hands reach.

Pros:
- the thing is TINY
- setup is easy as can be
- Produces enough power(at least to my small speakers) to be more than loud for our apartment, if we want it to :)
- Mixes wonderfully with the bass
- Also, it feels like a well built piece of electronics. (Unlike the Leppai I handled a while ago)

Cons
- There is one noticeable issue: if my laptop goes to sleep or shuts down while the amp is on and connected, it emits a loud static noise. I'm fine with it, as I've gotten use to unplugging the amp first, or switching to its secondary channel.

Overall, I'm happy with the buy :D