Supports TF card / USB flash drive up to 8GB; Built-in FM radio; Built-in 87.5~108MHz FM radio module, can automatically store 50 radio stations; Using high-sensitivity antenna; Built-in low power consumption and low distortion 3W digital amplifier; Maximum output distortion is 0.5%; Built-in high capacity lithium battery, ensures long time play; Universal 3.5m audio jack and LED seven segment display