*Magically amplifies the sound from iPhone iPad etc
*Supported by most iOS devices and Android phones,compatible iPhone4,4S,5,5S,6,6 Plus and iPad iPad mini  and other mobile devices with an external speaker
*Speaker unit：40mm 4 Ohm 3W
*Power tating：3W*2
*Frquency respond: 160Hz～20KHz
*SNR：S/N≥85%db
*THD：THD≤10%
*Power supply: 3*1.5V AA battery(battery not included)
*Automatic power off
*With 3.5mm Aux in jack(3.5mm aux in cable not included)
*With USB power supply jack(Micro USB cable not included)