RadioShack blue sports headset model 3304216. With Bluetooth CSR 4.0 and special port for improving low frequency sounds. Equipped with internal microphone that makes it easy to take phone calls while performing any type of activity. Its wireless operation is possible thanks to the integrated internal rechargeable battery with a capacity of 55 mAh and a charging time of 2 hours, allowing continuous playback of music for up to 4 hours or making telephone calls for up to 6 hours
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