Feature: 1. Radio (FM) 2. Supports reading TF cards and USB flash drives (audio) 3. AUX function 4. Bluetooth function 5. RCA audio output can be connected to a subwoofer 6. Colorful backlight 7. USB output for charging your phone 8. Phone app control; locate and find my car function 9. Reverse polarity protection Specification: Software solution: 5301 Radio frequency: FM 87.5~108 MHz Power amplifier IC: TDA1028 Output power: 45W x4 Working voltage: 12~14.4V Bluetooth version: 5.0 (default name: CAR BT) CPU: 5301 Installation size: 178x50mm Shell size: 187x58mm Depth: 55mm Phone app control: supports Locate and find my car: supports Front USB ports: 2 USB ports, one for charging and one for USB 2.0 reading TF card: supports Reset button: supports Audio format: MP3/WMA/WAV/FLAC Working temperature: -10~60 RCA port Audio output: 2 channels (left channel + right channel) Audio input: front AUX input (left channel + right channel) Note: There may be slight size deviations due to manual measurement, different measuring methods, and tools. The pictures may not reflect the actual color of the item because of different photographing lights, angles, and monitors. Packing list 1 X Car Radio1 X Speaker Cable1 X Power Cable1 X Remote Control (No Battery Included)2 X Removal Keys1 X Manual