... 1,bluetooth speaker with MP3 player 2,tiny, popular 3,answering the phone calls. 4,MP3 player. 5,listening music 2013 new products bluetooth ... calls while walking, hiking,driving item specification: Bluetooth specification: CRS 3.0 Normal charging time ... Frequence response: 35HZ-20KHZ Playing time: 4-6 hours Operating distance: ≤10-45 meters ... .muphie 2013 new products bluetooth speaker with MP3 player