... system Best quality of 4.1 home theater speaker with USB,SD card reader and FM radio Picture Output ... 5.25inch*1 Satellite 3inch*4Material Wooden+PlasticFunction USB,SD card reader FM radio and remote controlPacking ... . 4.1ch Hi-Fi home theater speaker stands system .2. The speaker can adaptscomputer,laptop,DVD,VCD,CD , ... Best quality of 4.1 home theater speaker with USB,SD card reader and FM radio