Product Information Speaker size 3 inches+2 inches*2 Output power 5W + 3W*2 Impedance 2Ω+4Ω*2 Input sensitivity 700mv±50mv Frequency response 150Hz-20KHz Power supply DC-5V-1A Separation degree ≥35dB Main machine size 110*131*158 mm Secondary machine size 67*79*98 mm Cable length 1.2m