... 4 hours of playback time7-Can be used in computer, mp3, mp4, player, mobile phone, SD ... / U disk music player, believed to have computer friends usually have U disk, a mobile phone ... with audio input. Also attached with the audio input line. If we have a computer or other audio equipment MP3 ... phone or computer use 5MM conversion head. Article: Nokia adapter. 7: In addition to the audio input, there ...