1It is very convenient to operate with remote control. 2AUX audio input, mobile phones, MP3/MP4/MP5/navigation audio playback through the machine in the car. 3Multi-circuit protection test, including overload, over voltage, short circuit. 4Power off memory function, remember the broadcast status of radio or music when power off. 5Support AUX/SD Card/U Disk/Bluetooth Input.Features: It is very convenient to operate with remote control.AUX audio input, mobile phones, MP3/MP4/MP5/navigation audio playback through the machine in the car.Power off memory function, remember the broadcast status of radio or music when power off.Multi-circuit protection test, including overload, over voltage, short circuit.Support AUX/SD Card/U Disk/Bluetooth Input.Specification:Condition: 100% Brand NewMaterial: ABS + Aluminum Alloy Color: BlackModel: 20178/20179SD Card Slot: TF Card USB Type: USB2.0Screen Process: VA ProcessRadio Band: FM1 FM2 FM3 Remote Control: 21 Buttons Remote ControlRadio Chip: QN8035Bluetooth: SupportVoltage: 12V Power Amplifier Chip: TDA7377 Output Power: 60W * 4Radio Frequency: 87.5~108MAUX/SD Card/U Disk/Bluetooth Input: SupportMounting Size: 185 * 11 * 50mm/7.3 * 0.4 * 2inPackage Weight: Approx. 615g/21.7ozPackage List:1 * Car MP3 Player2 * Power Line2 * Disassembling Accessories1 * Remote ControlNote:1. Please allow 0-1 inch error due to manual measurement, thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.