There is one huge problem with the Jawbone.  The sound quality is average, volume is average, features i.e., voice dialing, caller ID, great.  The fact that voice control features are free vs. Plantronics pricey vocalyst that is essentially the same thing but you must pay a yearly subscription rate after the 1st year, is great and the various voices you can download are cool.  The problem is its UNCOMFORTABLE to wear with the ear hook, as its all plastic, non padded and creates blisters on the inside of your ear after a few hours of wearing.  With the rubber inserts, it will not stay on, especially when eating. Mine came off while eating soup and fell into the soup...luckley for me I was able to return it and get my money back  (gotta love Costco) Lady at costco  returns said they got a lot of these back for the same reason. So I went with a differnt more comfortable brand Jabra Supreme and totally love it.
There is one huge problem with the Jawbone. The sound quality is average, volume is average, features i. e., voice dialing, caller ID, great. The fact that voice control features are free vs. Plantronics pricey vocalyst that is essentially the same thing but you must pay a yearly subscription rate after the 1st year, is great and the various voices you can download are cool. The problem is its UNCOMFORTABLE to wear with the ear hook, as its all plastic, non padded and creates blisters on the inside of your ear after a few hours of wearing. With the rubber inserts, it will not stay on, especially when eating. Mine came off while eating soup and fell into the soup... luckley for me I was able to return it and get my money back  (gotta love Costco) Lady at costco  returns said they got a lot of these back for the same reason. So I went with a differnt more comfortable brand Jabra Supreme and totally love it.