1) Support TF card 2) Built-in FM radio. 3) Built-in high-capacity lithium battery 4) Collections using MINI/5P USB charging and audio input. 5) Using 4 ohm 3W, 40MM inner magnetic full-band speakers. Band diaphragm 6) Built-in low power / low distortion 3W digital amplifier. 7) Universal 3.5mm headphone audio output jack