iKross SuBass 3.5mm Mini Portable Stereo USB Rechargable Speaker - Black / Red Expansive Construction Design to give the best low frequency output Compatibility: Apple iPods, iPhone, iPad, MP3 players, CD players, laptops, Tablet with 3.5-mm audio socket Full-bodied, 360-degree sound Ultra-portable compact size with long-lasting internal chargeable battery connect Multiple Speakers for Maximum Sound