Digital In-Dash Car Stereo Head Unit Audio Radio Player MP3 FM AUX SD USB WMAFeature:Radio Size: Approx. 18.8x11x5.2cm\/ 7.40x4.33x2.05!#!amp!*!quot;Remote Size: Approx. 8.5x3.9cm\/ 3.35x1.54!#!amp!*!quot;Power Requirements DC=14.4VLoad Impedance: 4OHMMax. Power Output: 50Wx4FM Frequency Range: 87.5-108.0MHZSD card have music into SD conect can to playUSB have music into USB conect can to playLarge LCD with power level materEncode volume controlReal time clock functionElectronic preset equalizer(Pop\/ Rock\/ Classic\/ Flat) controlLED security lightESP(Electronic anti-shock protection)50W x 4 maximum output powerLow-impedance RCA line out plugsPLL electronic tuning stereo AM\/FM. MPX radio30 station pre-sets 12AM\/18FM、 station seek、 preset scanAutomatic memory preset store functionRemote controlSupport MP3\/WMA file playback from USB\/SD\/MMC cardPackage Included:1 x USB\/SD\/MP3\/ Radio Player1 x Cable2 x Mounting Collars1 x Owner Manual