1 Support TF / USB MP3 music player 2 Support FM function 3 Double speakers play music 4 Speakers with skull pattern 5 Simple and convenient wiring Color: black Material: plastic Packing size: about 15 x 12 x 8cm Main device size: about 76.56 x 57 x 35mm Speaker size: about 90 x 77 x 72mm Speaker cable length: about 65cm Basic parameters: 1 Operating voltage: DC 12V 2 Dsplay screen: 1.05 inches 3 Buttons: Pause/Play key， + / - keys， Previous / next， On/Off4 Interface: USB interface， TF card slot Package:2 x Speakers1 x Main Device1 x Power cable1 x Main device mounting accessory ( including 4 screws， 1 mounting plate )1 x Speaker mounting bag ( including 8 screws， 2 mounting plates )In original package