This car MP3 audio supports BT connection, BT music and BT calling functions, suitable for a variety of car models, support a variety of audio source interface, built-in dual speaker design, sound quality is outstanding. Features: Support BT connection, BT music and BT call function. Support TF card, AUX audio source interface. Support MP3 format audio playback. Digital radio, FM three band, automatic station search, 18 preset stations. Use round black film LCD display, time, frequency, spectrum, track, status display. Large knob encoder, electronic volume control. AUX IN function is supported to connect mobile phone to plays mobile music. USB supports mobile phone charging. Unique panel design, multi-function button distribution, blue backlight. Specifications: Material: plasticsandmetal Power supply: direct current 12.0V Speaker impedance: 4-8 Rated output power: 12.0V 5W 2 channels Maximum output power: 12.0V 5W 2 channel FM Frequency ranges: 87.5-108MHz Noise limit sensitivity: 37dBf SNR: 40dB MP3 player: Frequency response: 100Hz-10KHz (5dB) SNR: 45dB Channel isolation: 30dB Harmonic distortion (at 1 kHz): 5 percent Stereo channel balance: 3dB Item size: 178 x 58mm or 7.0 x 2.3in Package size: 200 x 70 x 100mm or 7.9 x 2.8 x 3.9in Package weight: 300g or 10.6ounce Packing list: 1 x Car Radio