... +3 W) THD = 10%2) Frequency response :150-18000HZ (+ /-3dB)3) signal to noise ratio: ≥ 70 dB4)speaker: 45mm outer diameter, magnetically ... )10 )aluminum body and elegant appearance, unique design, so sound quality is betterColor: red, blue, black, silver, BLACK FQ Bluetooth Portable Speaker,USB Speaker ...