While the headphones are nice and comfortable, the battery life seems good. The microphone noise cancellation is mainly due to the fact that the designer decided to make a very small hole in the headset for the built-in condenser microphone (very bad, really NO noise cancellation for the microphone). The audio volume is as loud as your device's audio will allow and seems to drop off a bit through the headset. (My previous model, the Picun BT08, seemed to have a little amplification built into the headset to increase the volume for lower amplitude noise, which I really liked. It also had a better response range, although there was no noise-cancelling microphone for it the product). Overall, I'm disappointed with the noise-cancellation of the microphone and the listening volume of the device. However, they are comfortable, cover the entire ear and are adjustable.
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