... bluetooth headset with mp3 player, ultra-long standby time and talking time, Fashionable Design Business utility Manufacturer stereo bluetooth headset with ... mp3 player , wholesales price, good reputation.Specifications: Bluetooth Version: V2.1+EDRFrequency range: 2.4GHz-2.48GHzTransmission power: class2Transmission distance: 10meterTalking Time: Up to 8hoursStandby Time: Up to ...