We were very impressed with the audio quality. The SBH600 promises high fidelity audio, and it delivers. We were pleased with the bass booster and widening surround sound modes too--in fact, we would recommend using the bass booster most of the time to bring out the rich and full sound of your tunes.
Call quality, on the other hand, was a mixed bag. Though we could hear our callers loud and clear, callers said that we sounded on the soft side, even when we were in a quiet environment. In a noisier environment like on a busy city sidewalk, they had to strain to hear us and we had to raise our voice a bit more. We could still carry on a conversation, but it wasn't ideal.
Other features of the SBH600 include the typical capabilities to answer, end, and reject a call; last number redial; voice command support where available; placing a call on hold ;and transfer a call from the phone to the headset and vice versa.
The Samsung SBH600 has a rated battery life of 11 hours talk time, 11 hours music playback, and 12.5 days standby time.