Color screen FM Frequency Range (International): 76Mhz-108MHz USB: Connect USB flash drive (maximum support 32GB, not included) LED color screen: digital screen display, showing red Infrared receiving module TF: Connect TF memory card (maximum support 32GB, not included) AUX: audio input interface VOL-: Short press is to select the previous song; long press is to decrease the volume PLAY/PAUSE: Short press is the switch between pause and play; long press is the FM FM automatic station VOL+: Short press is to select the next song; long press is to increase the volume MODE: Switching of USB/TF/FM/LINE IN/BLUETOOTH Package includes: 1*MP3 Decoder Board 1*Remote control (Without the Battery, no retail package)