Off-time display function 2 USB ports support fast charging High quality digital FM stereo radio Preset 18 stations ( frequency: 87.5-108 MHz ) Supports USB / SD / MMC card reader Supports Audio: MP3 / WMA / APE / FLAC / WAV etc. Supports folder function Supports break points and ID3 Play Supports remote control Physical button control affects or switches channels, 12-band EQ adjustment Electronic control volume treble, bass, balance and fader Multiple EQ scene selection: Jazz, rock, pop, classical, etc. Mute and loud controlL / R RCA audio output jacks4-channel high power output ( 4 loud speaker ) Supports modes: BT / APE / WAV / WMA / MP3 / FM The remote control battery (not included): CR2025 3V Power Supply: 11 - 16V Transmitter frequency: 2468MHz Power output: 100mW Video in / out: PAL / NTSC composite video signal Working temperature: -20 - 70 degree Receiver sensitivity: -93dbm Input voltage: 12V