Generally speaking, I couldn't be happier. In the sporting arena, they excel. Of course, there's always room for improvement, but in this case, all that's missing is a little bit of sound tuning. Advantages that vary: The headphones are small, have a long battery life (relatively speaking), include a power unit for charging the phone in addition to the headphones, allow for the master earpiece to be swapped out, produce sound of surprisingly high quality given their size, are water-resistant, provide great sound isolation, are comfortable to wear, are lightweight, and have a high-quality microphone that allows for clear communication. The packaging and the earpieces themselves are of high quality. ConsThe headphones lack an in-line volume control, but the tight buttons prevent accidental activation.
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