... 3.Play time 2-4 hours round speaker , portable, for mobile/notebook/mp3/mp4selling point1.Mini pop up, portable, unique design, small ... , sound beyond size3.Ideal to use with MP3, MP4 player, PC, computer, laptop, mobile phone etc.4.Use with rechargable battery,mini,portable ... speakers, 2.0 speakers,2.1 speakers,card speakers and bluetooth speakers.We have 6 English speaking foreign trade sales persons ...