... .Play time 2-4 hours 2012 new speaker ,round for mobile/notebook/mp3/mp4selling point1.Mini pop up, portable, unique design, small case ... MP3, MP4 player, PC, computer, laptop, mobile phone etc.4.Use with rechargable battery,mini,portable,easy to take ,can enjoy music anywhere ... are glad to answer inquiries. Contact us now.Thank you! 2012 new speaker,round, for mobile phone/notebook/mp4/mp3 (SP-105)