Model NO.: F668-89 KEY FEATURES: Rated Power: 45W Peak Power: 90W Speaker Unit: Bass(8"x1)+Mid-Range(3"x1)+Tweeter(1"x1) Battery: 12V7A F. Response: 45Hz-20KHz THD: ≤1% S/N: ≥50dB Dimension: 305x270x510 mm USB/SD; Guitar Input Remote Control  Wireless MIC x 1 or x2