... Private Mold --- HOT! USB 5.1 subwoofer speaker with SD,FM,VFD display,Remote control,Karaoke Specifications: 1. Power ... 3"full range*53. USB/SD decoder4. Digital FM radio 5. Full-function remote control 6. Dynamic ... subwoofer; plastic satellite speakers9. Usage: easy connection with USB, SD/MMC card, FM, PC, laptop, DVD, VCD, CD, ... : USB 5.1 subwoofer speaker with SD,FM,VFD display,Remote control,Karaoke