Great Sound - Bluetooth 4.0 apt-X codec for improved stereo audio quality * Compatible - 3.5mm stereo plug and the included RCA cable fits most existing audio gear. * Flexible - The Roxa can pair and connect simultaneously to both phones and tablets. * Includes a 1AMP USB charging port to charge your phone while listening to music. * Power input is 100V-240V 50/60Hz while the physical plug is the US style 2 prong.