Product specifications: Color background lights and LCD display Built-in radio antenna socket Supports Bluetooth function Supports hands-free calls. Supports advanced audio playback mode. Supports clock indication during power outage. digital stereo FM radio Stereo sound effect: Built-in powerful IC, and makes driving fun. FM: Support three-band radio storage FM1-FM2-FM3 and 18 radio stations preset. You can download an app and control the machine through your mobile phone FM frequency: 87.5MHz-108MHz Support USB or TF card reader. Support audio: MP3 or WMA or WAV and other formats Support folder playback function Support remote control. The panel is equipped with two recharging ports, which can recharge two mobile phone simultaneously. Rotary electronic volume control. Volume knob control MP3 playback supports pause or preview or repeat or shuffle and up or down Electronic bass or treble or left or right balance or front or rear balance volume control Multiple EQ setting modes to choose from: rock, pop, classical, etc. Supports mute and equal volume controls. Front AUX audio input hole and rear terminal L or R audio RCA output hole. 4 channels of high power output (4 high power speakers) Working voltage: DC12-14.4V Working temperature: -10 to 60℃ BT: 5.0 Please note: This car radio is not built-in and does not contain any memory card or TF card inside. The CD player has no CD space. This does not support CD or DVD players. This is a car radio MP3 player that supports USB TF card. Due to customs issues, the remote control does not come with batteries and buyers need to purchase separately. This package includes: x 1 MP3 player x 1 power and car speaker cable x 1 remote control (battery not included) x 2 x installation fixing metal x 1 manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.