Bluetooth Specification: V2.0, 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 / / MMC card reader, Support Audio: MP3 / WMA / APE / FLAC / WAV etc.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 loud control L / R RCA audio output jacks, 4-channel high power output ( 4 loud speaker ), Support modes: BT / APE / WAV / WMA / MP3 / FM FM Radio Tuning Range: 87.5-108.0MHz Sensitivity: Less than 20db Stereo Separation: More than 25db : More than 60db Power Supply 12V Machine: 11-16V Note: This machine is 12V machine, not compatible to the 24V power Special Function : FM Radio, Bluetooth, Hands-free calls, MP3 Player, USB flash disk Output Power : 4 x 60W Voltage : 12V Music Source: card, 3.5mm stereo headphone jack, Cellphone, Flash drive Material:ABS+metal colour:black Package Contents: 1 x Car Radio 1 x Remote Control 2 x Wire 2 x keys to install 1 x Disassembly tool 1 x User Manual Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.