| http://www.w3.org/ns/prov#value | - Personally I prefer the convenience of using a rechargeable battery, but I can see this as being a great way to guarantee the headphones are always ready to do the job when they are needed.I used the headphones on my recent flights to and from Detroit and the NAIAS. The plane was a small computer jet and was, as a result, engine noise was quite loud.
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