The CE, FCC, ROHS certificated car stereo. If you have any problems about the item, just contact us at any time. MULTIPLE EQ SELECTION?Volume options: BAS, TRE, BAL, FAD, LOUD. Also, many EQ scenes selection: Jazz, Rock, Pop, Classic, etc. This equalizer can give you the best choice for audio setting, as well as excellent and real sound. PERFECT RADIO RECEPTION?Automatic search station, save station. FM radio(87.5-108MHz) can store 18 radio stations. Also, listen to music, newsletters, traffic information. Enjoy yourself anytime. BUILT-IN BLUETOOTH?Bluetooth handsfree device and microphone allow you to answer callings, listen to music and media sounds from devices with Bluetooth function. Once you pair your device, it will automatically be paired next time you get into your car. NUMEROUS FUNCTIONS?AUX audio input interface can add MP3, GPS, mobile phones, music players and other audio input. Supporting USB input and charging your mobile phone and compatible with all types of U flash disk. Supports pause /preview/repeat/random play and 10 tracks up/down selections.Kindly note: Dimension:This product installation needs professional skills. If not, please go for professional help.Details refer to the instruction manual. Bluetooth : Search for Bluetooth devices on your phone. Pair to device using the password "0000".Features: Voltage:DC 12V Decoding chip:TY3510 Screen type:LCD-VA Radio Band:FM Radio Chip:Integrated chip Power output:60W Work temperature:-10?~60? Bluetooth name:CAR BT Power amplifier chip:TDA7388 Radio frequency:87.5~108MHz TF Card: SD big card GPS Card:Not Support USB version: 2.0 Car logo change:Not Support Audio format:MP3/WMA/WAV/FLAC RCA port:4 channel audio outputPacking List 1 x Car Stereo Receiver 1 x Remote Control 2 x Power Cables 1 x User Manual 2 x Key