... 2. melodious sound 3. great sound 4. USB card,remo mini subwoofer speakermini speaker, computer speaker, Selling point:Extendable bass chamber ... the mess caused by the overlong cable.2-in-1 mini USB port: through which you can recharge speaker and input ... and long playtime.Compatible with: Mobile, MP3/MP4, laptop/desktop, iPod/iPhone, CD/DVD etc.Available in any colors: red, black ...