Built-in BT + microphone. Hands-free calls Supports Advanced Audio Distribution Profile Off time display function Digital high-quality FM stereo radio Built-in BT + microphone. Hands-free calls Supports Advanced Audio Distribution Profile Off time display function Digital high-quality FM stereo radio Preset 18 stations(frequency:87.5-108 MHz) Support USB/TF card reader Support folder function Support breakpoints and ID3 Play Support Remote control Rotary Volume Control MP3 randomized,10 track up/down playback Electronic control volume treble, bass, balance and fader Multiple EQ Scene Selection:jazz, rock, classical, etc. Mute and Loudess control L/R RCA audio output jacks 4-channel high power output (4 loud speaker) Support Audio:MP3 Type:B:Car Mp3 Stereo name: Car players Colour:Black Material:aluminum alloy Size: Machine size:178 mm (W)x50MM (H)x125 mm (D) Overall dimensions:188 mmx58mm (H) Package Contents: 1 set * Car players