ESSGOO Car Audio Radio 1 Din MP3 Car Stereo Bluetooth FM AUX-In USB Colorful Buttons APP Remote Control 1Din Multimedia Player Feature: 1. Radio (FM) 2. Supports reading TF card, USB flash drive (audio) 3. AUX function 4. Bluetooth function 5. RCA audio output can be connected to a subwoofer 6. Colorful lights 7. Supports USB output 8. Voice assistant function (in Bluetooth mode, long-press the knob to wake up the voice assistant) 9. Mobile app function Specification: Model: 1 Din Car MP3 Player Radio CPU: 2900 Radio Frequency: FM 87.5~108.0MHz Output power: 45Wx4 Working voltage: 12~14.4V Bluetooth version: 5.0 (default name: Car-BT) Screen size: LED display (white digital tube) Installation size: 178x50mm Shell size: 188x58mm Depth: 55mm Color box size: 200x110x80mm (cowhide box) Mobile phone interconnection: support app connection USB port: front USB 2.0 x 2 (one for charging, one for reading USB flash drives) TF card: support Reset button: support RCA port: Audio output 2 channels (1 channel left channel + 1 channel right channel), front AUX audio input (left channel + right channel) Audio format: MP3/WMA/WAV/FLAC Video format: not supported Picture format: not supported Factory set password: not supported Locate and find a car: not supported Screen rotation: not supported Rearview camera input function: not supported Play video warning: not supported Steering wheel control: not supported Video output: not supported Offline map: not supported Dashcam input function: not supported GPS navigation: not supported DAB function: not supported Language: English Packing list: 1 X Car Radio 1 X Remote Control 1 X Power Harness 1 X Removal Key 1 X Manual A:( GREEN ) Rear left horn positive ( GREEN/BLACK ) Rear left horn negative ( WHITE ) Front left horn positive ( WHITE/BLACK ) Front left horn negative ( GRAY ) Front right horn positive ( GRAY/BLACK ) Front right horn negative ( VIOLET ) Right rear horn positive ( VIOLET/BLACK ) Right rear horn negative Note: 8 horn wires,each wire should not touch or touch other places. There are only two speakers. Only two sets of wires are connected. The other lines are empty. B:+12 Accessory/Switch( Red ) Power Antenna/Amplifier Turn On( Blue ) +12V Constan Power Supply( Yellow ) Ground Wire( Black )