Pros Not really any I can think of as the device is basically a paperweight.
Cons -Bad design - the ear hook is uncomfortable, the earbuds aren't anywhere as good as the plantronics offering.
-Sound quality is terrible to the point the device is unusable.
Summary Definitely don't recommend getting one of these. Try BlueAnt or Plantronics.
Pros Sound and noise cancellation was good while it worked.
Cons poor quality, lasted only 4 months (including replacement I bought), very poor customer service
Summary I bought my Jawbone thinking it was great. It worked great for 4 months. Then it "pooped" out after a few minutes use. Replaced it at the retailer, SAME THING. Jawbone customer service is HORRIBLE. They run you through "hoops" for weeks and then in the end, its next to impossible to get them to replace/honor their warranty. I'm an airline pilot. We use Plantronics in the cockpit. Bought a Plantronics 975, an A165 and an A155 for my wife. Gone through many headsets over the years (Nokia, Motorola, 'nonamed headsets', Jabra and Jawbone). Came back to what I use in both the Airbus and the Boeing. Plantronics. JAWBONE IS HORRIBLE. THEIR CUSTOMER SERVICE IS ATROCIOUS! DON"T BUY A JAWBONE!
Pros Looks pretty. Did sound good, at least in the beginning.
Cons The Era speaker started sounding like a cracked speaker 6 months after I bought it. On both my Icon and Era, people, complained they couldn't understand me sometimes. Very uncomfortable earpieces that twisted around causing the headset to fall out!
Summary I own the Icon and the Era and I agree with many other people, the ear pieces are horrible! I have very small ear canals and even their smallest ear piece leaves my ear sore after less than 10 minutes! That's because the speaker on the headset is too big. Also, the rubber piece would twist around causing the headset to come loose and fall out! If they'd make the headset speaker a little smaller then they could make an even smaller earpiece, and than make them tighter so they don't twist loose on the speaker neck. Problem solved!
Pros Works fine indoors.
Cons Wind and noise magnet outside.
Accelerometer is a gimick and useless.
Summary I bought this thing about a year ago based on the Cnet review and Nicole's comment about better wind and noise cancellation. I guess I was fooled by "better". Inside it works fine. But outside, it's a wind and noise magnet, essentially unusable. It's as if the headset design is scooping the wind. It's much more clear for both parties to use the phone outside.
Another thing, the accelerometer is a gimick and useless. To remember how many times to shake to answer calls or to pair, and the mere effort to shake it...it's much easier and effortless to press the button.
Online reviews and advertising is all about trust. It's evident, several of us are in firm agreement on the wind and noise problem, contrary to the review. Unfortunate for me, it's $100 down the drain.
Pros comfortable and stays in place
Cons cuts in and out during conversation.
incoming calls take 5 secs to connect.
Summary will not buy again due to cons.