Features: 1. Bluetooth (answer/call the phone, music player) 2. ISO standard power interface 3. Short chassis 4. The radio 5. Read the card, read the U disk (audio playback) 6. AUX function 7. Bluetooth 8. RCA audio output 9. Audio copy function Specifications: Model: JSD-520C-B Voltage: DC 12V Screen size: LCD VA OS: NO Decoding chip: Jieli 4900 Button light: Blue light Time system: 24-hour system Radio band: FM1/FM2/FM3 Radio chip: QN8035 Bluetooth connection password: A small number of mobile phones are Required, password: 0000 Bluetooth version: 4.0 Amplifier chip: TDA7377 Radio frequency: 87.5~108MHz Memory card slot: Secure Digital Memory card Remote controller: 21-key card remote controller USB interface and quantity: A USB interface to read U disk songs Reset button and the use of RES hole: Use small and sharp stick plug in the Small hole to press the button to reset RCA jack introduction: Two-way RCA output, red and white jack. Front aux audio input: Support Volume knob: Support Supported audio formats: MP3/WMA/WAV/FLAC Packing weight: About 395g Product size: About 178*50*70mm/7.01*1.97*2.76in Note: Pictures may be displayed differently due to different shooting angles and lights. Manual measurement will have errors, ranging from 1-2cm. Please understand.