Guardian headphones help protect hearing This pair of headphones Guardian Hamilton Electronics will help determine the foreign listeners have to keep the volume level or not, as a matter of courtesy green and red LED lights are located outside. Whenever the indicator lights up red, it means that the volume cranked way levels higher than they should be. It is better to adopt this habit of children in order to protect their hearing, but certainly a little outside help was injured. Each pair Guardian headphones retail for $ 39.95.
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