U-disk&SD card speaker 1.3.5MM regular jack 2.Read SD card/USB drive 3.Replaceable li-ion battery. 4.FM radio function U-disk&SD card speaker description:1.3.5MM regular jack,hook up to any IPod, IPhone, digital music device, MP3, phones,etc 2.Read SD card/USB drive 3.Replaceable li-ion battery . 4.FM radio function 5.earphone output 6.color:Black, Red, blue.7.material: plastic and metal mesh. U- ...