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