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 x5 1 SDMMC Card Slot 1 HDMI port Output Power: 50W+15W x5 Unit Option: 6.5"+3" x5 Output Power:100W+18W x5 Frequency Response: 40Hz-20KHz Separation: ≧50dB S/N Ratio: ≧75dB USB, SD Compatible FM Radio Bluetooth Remote Control Included (Remote requires 2 AAA batteries, not included) Number of Speakers: 5 Included: 1 Owners Manual(s) Features: Bluetooth Compatible Manufacturer Warranty: 90 Day Labor Limited, 90 Day Parts Limited Speaker Output: 30 Watts Tuner: Digital Use: Indoor Measurements: 12 Height/Inches, 43 Depth/Inches Weight (lb.): 8 Lb Country of Origin: Imported