Pros Sound quality is amazing on both sides. I am able to hear others clearly without the need to press the headset into my ear like others I have tried. I never have any complaints about people not being able to hear me. Music sounds great too.
Cons VERY short battery life! I only get about 2.5 hrs talk time. Definitely not the 4.5 hours described. I still have to use my old headset as backup when the battery dies. Bose really needs to work on their portable battery technology.
Summary Overall, I would suggest this headset if you only plan to use it for a couple of hours each day, or plan to use another headset as backup when this battery needs recharging. I am hopeful that Bose will work on their battery technology and release a series 3 device with the same superior sound quality and additional battery life.