BeFree Sound stand alone Speaker System with digital FM Radio features a built-in 4 high powered speaker system. Total output power: 100W+18W. Volume control and full function remote control. This systems four standing speaker towers generate amazing sound.5.25 Amplifier x1 + 3 Speakers x51 SDMMC Card Slot 1 USB portOutput Power: 50W+15W x5Unit Option: 6.5+3 x5Output Power:100W+18W x5Frequency Response: 40Hz-20KHzSeparation: ≧50dBS/N Ratio: ≧75dBUSB SD CompatibleFM RadioBluetoothRemote Control Included (Remote requires 2 AAA batteries not included)Condition : This item is brand new unopened and sealed in its original factory box. Sold proudly by ILife online Store