RadioShack stereo Headphones, model 3304222. With built-in Bluetooth 4.0 and microphone to answer calls in hands-free mode or listen to your favorite music wirelessly, they have an operating range of up to 10 meters. Made with a lightweight, slim and adjustable design in black with built-in controls for maximum sound experience. They have 30mm elements with 20Hz-18kHz frequency response, increasing the range of sounds it plays to get clearer and more accurate audio. They include an internal rechargeable 180 mAh battery with a maximum use time of 10 hours at 70% of its volume.
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