... systemPackaging & Delivery Packaging Detail:Packing: Gift box Loading Qty 1,100/40'HQDelivery Detail:30 daysSpecifications1, 5.1CH Home Theater ... 50Hz 3, Include 5 satellite speakers(wooden) and 1 subwoofer(wooden)4, Built-in 5.1ch amplifier 5, Output Power: RMS105W (15W ... 4ohm*2.75" Frequency:180Hz-20KHzS/N Ratio:≥85dBDistortion rate :1% 5.1 ch home theater speaker system with usb,sd card reader,FM