Listen to your favorite tunes at home or on the go with these Funkyfonic iPad speakers. Knotches on the underside of speakers allow them to sit on the top of your screen to achieve optimum sound. Alternatively, speakers can rest on desk or table for smaller devices. Compatible with any device with a standard 3.5mm headphone socket including an iPad, tablet, iPhone, mobile phone, MP3 player, PDA, portable gaming systems and computers. Control volume from device. Requires USB port for charging. Includes 3.5mm stereo plug and USB connection. Charge time: 2 hours. Play time: 4 hours. Frequency : 100Hz - 20KHz. Assorted red or blue color (color is random and chosen at the time of shipping).