... Loading Qty 1,100/40'HQDelivery Detail:30 daysSpecifications1, 5.1CH Home Theater System 2, USB 2.0 slot 3, RMS:105W ... 5.1ch amplifier 5, Output Power: RMS105W (15W*5+30W), (Optional )Technical parameter:Subwoofer driver :30W 8ohm5.25" Frequency:50-200Hz Full-range speaker ... *2.75" Frequency:180Hz-20KHzS/N Ratio:≥85dBDistortion rate :1% 5.1 ch home theater speaker system with usb,sd card reader,FM