Brand : DRN. Model No. : DR103(100W) / DR903(70W). Requency Response : 40Hz~20KHz. USB. Digital FM Tuner. USB/SD Card Reader. Bluetooth Function. LED Display. Remote Control. Flash Led Light. AV Input Output. TV, Games. Mulimedia Ready. Magnetically Shielded. High Power. Hi-Fi. One Year Company Warranty.