Features:- Built-in Bluetooth V2.0， microphone.- Detachable front panel design， single-din MP3 player.- Support hands-free calls function.- Support advanced audio transmission mode.- Clock indicating while power is off.- High-definition digital stereo FM / AM radio.- Support three-band radio store FM1 - FM2 - FM3， can preset 18 radio stations (Radio frequency: 87.5 - 108MHz).- Support USB / SD card reader， up to 32G.- Support audio: MP3 / WMA / WAV / APE formats and so on.- Support folder play function.- Support break point memory and ID3 play.- Remote control function.- MP3 play supports pause / preview / repeat / random play and 10 tracks up / down selections.- Electronic type bass / treble， left and right， front and back， channel separation， volume control.- Multiple EQ scenario mode choice: Jazz， rock， pop， classic， etc.- Support mute and equal loudness control.- Front AUX audio input hole and rear terminal L / R audio RCA output hole.- 4 track high-power output (4 high-power loudspeakers) 52W x 4.Specifications:FM RadioSensitivity: 22dbMedium frequency: 10MHzSome PlaybackMusic format support: MP3 / WMADisplay format: ID3 displayPower Supply12V Machine: 11 - 16VNote: This machine is 12V machine， not according to the 24V power supplyAudioOperating temperature: -20 - 60 deg.CQuiescent current speaker impedance: 4 - 8ohmFrequency Response: 20 - 20000HzRemote Control- Build-in lithium cell: CR2025 3V- Remote range: 5m Type: Car MP3 Player Model: 1188B Features: Breakpoint memory playing，One-click folder playing Color: Black Material: Electronic Components，Metal，Plastic Installation Space: 1-DIN Output Power: 4 x 52W Voltage: 12V Music Source: SD card，USB flash disk，Flash drive，3.5mm stereo headphone jack，Cellphone Built-in EQ: Pops，Classic，Jazz，Rock SNR (dB): more than 60db Freq. Response: 30Hz - 15KHz Bluetooth version: 2.0 Bluetooth protocol: A2DP Transmit Distance: 10m Media Format : WMA，MP3，WAV Package weight: 0.677 kg Product size (L x W x H): 18.000 x 13.000 x 5.500 cm / 7.087 x 5.118 x 2.165 inches Package size (L x W x H): 21.000 x 18.000 x 8.000 cm / 8.268 x 7.087 x 3.150 inches Package Contents: 1 x 1188B 12V Detachable Front Panel Car Audio Stereo FM Bluetooth V2.0 USB SD Mp3 Player， 1 x Remote Control， 1 x Wire， 1 x English User Manual