X3 anywhere you can listen to MP3. Deep, rich bass tones and excellent sound reproduction of a small, compact, high-performance controller 1 feature x3 always be able to use the micro-controller x3 mobile speaker, AAA batteries or USB power supply can be selected (Dual-mode power supplies that are supported, USB power lead), is an ideal move. X3 controller in its own volume control on your help to find the sound level is good To maintain the status comes with a carrying case.

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What Jack and the standard is 3.5 millimeters, the popularity of mobile telephone Connectors, micro-speakers in a variety of devices, mobile phones, MP3 players, notebook PCs and Audio features such as personal computers can provide.