Cons: Not good, not bad- have another Plantronics model I iike much better. Biggest con is I really need the ear hook due to somewhat malformed, not average ears. it did not come in the package, and when I wrote to advise of the situation, it was never rectified.
Cons: Voice quality is horrible. Everyone I talk to on the phone using this bluetooth, they know I'm on a bad quality bluetooth, and tells me they can't hear me well. I shutoff the bluetooth and use the phone normally, and voice quality is back to 100%.
Summary: I'm happy with the headset, but it is not able to access all the features on my phone. Instead it has its own features that are similar. One negative is the volume control, there are only three levels low, med, & high. You can not increase loudness by upping the volume on your phone, for me the high setting is not loud enought. I'm in an above average noisyy environment. I need to cover both ears to hear or move to a quieter area, which is not always possible.