Summary: Just as good noise canceling as a pair of Sony's MDR-V600 Studio Monitor Series Stereo Headphones, which i use when @ my computer.

Once paired with my phone (Mototorla V3xx), when connecting again after turning the unit off, frequently the pone would not be able to connect. Probably an issue with the phone.

Sound quality when using these as a phone headset, is just as good as any other headset. Listening to music and a call comes in, it'll ring alongside the music, and then when the phone button is pressed, it'll automatically pause the music, answer the call. when the call is over, it'll hangup, and immediately resume the music (if paired with a phone)

Connection problems (where the sound would cut-out for 1-5 seconds, like the music was skipping) example: phone in my pocket while riding a bike, would cut out as i pedal. once the phone was clipped to handlebars, problem solved. unsure why this was happening. also have same problem when turning my head. (phone within a plain sight)

The forward / reverse dial (right side) would not work as a fast-forward / fast-reverse (by holding the dial in one direction). not sure if this was an intended feature, or something that is not supported by the phone, but would have been appreciated.

Other headphones within this pricerange ship with a bluetooth adapter, if you're planning to use these with a computer, you'll need to get a Stereo USB Bluetooth receiver / transmitter.

The headset's leather padding will get hot against your ears if you listen for long periods of time, but this is the same thing as any of this type of headset.

The battery life on these, as well as the charging time is amazing. they'll fully charge from the included charger in a matter of hours, and stay charged with usage for days. I use them for about 2-hours each day (to and from work, commuting by train). i'll charge them once-twice a week, and they'll recharge to full within an hour. When charging, both blue lights (on the phone button and the play/pause button) will light up while charging, and turn off when charging is done.

I highly suggest this product if you usually listen to DJ or Studio style headphones, and want to go bluetooth.