... phones, mp3, mp4 speaker2 .before charging to ensure close the audio, normal charging saturated for 2 hours, after charging can be ... hour.3.Use one end of the audio cable to connect a computer or MP3 audio output port and the other end ... .4.USB charging cable can not be used as the audio cable 5.Speaker Power: 2W (watts), 4Ω Battery capacity: 300mA ...