1, 2013 hot portable bluetooth speaker 2,tiny, popular 3,answering the phone calls. 4,MP3 player. 5,listening ... walking, hiking item specification: Bluetooth specification: CRS 3.0 Normal charging time: about 3-5 hours Frequence response: 35HZ-20KHZ Playing time ... Peak power: 15 W Signal/ noise: 85 dB Working voltage: 3.7V Battery capacity: 400mAh my skype: laipute.muphie hot bluetooth speaker with ...