Use magnetic field, vibration and tepidity, 3 kinds of physical factor combine. N-6400 Series Magnetic resonance thermal therapeutic ... magnetic field, vibration and tepidity, 3 kinds of physical factor combine.2. 2 kinds of treatment modes, choose it as per patient ... tepid probe,Neck shoulder tepid probe)4. The biggest effective value of output voltage is safe voltage which lower than 36V.5 ...