Product technologies:1. Digital MP3 player: Support Bluetooth， U disk， TF card direct reading function.2. Radio function.3. FM high sensitivity stereo digital reception.4. LED indicator light-emitting diodes.5. AUX external audio input function: support for smartphone and other devices with 3.5MM standard interface. 6. Built-in oversized bass film， to strengthen the bass vibration to shake function.7. Class D digital amplifier chip， low-power， high-power.8. The use of neodymium speaker bottom of the pot， combine scientific acoustic structure design.9. Power supply: replaceable lithium-ion battery + external power adapter interface.