INTRODUCTION Most of people experience muscle spasm, tight muscle or other chronic pain of some kind. Transcutaneous Electrical Nerve stimulation is convinced one of the most effective measure to relieve the pain and relax muscles. Our MH serious TENS EMS Body massage machines are designed to help someone suffered from it. Benefit from our TENS Body Massager right away, and you will find its amazing efficiency of pain relief and relaxation. SPECIFICATION MH8000 Combo Massage Machine Channel Dual Intensity 0 - 80mA Wave form Asymmetrical rectangular biphasic pulse. Power source DC 9V Size 13.6 (L) x 7 (W) x 2.65 (H) (cm) Weight 162 grams (battery included) Pulse Rate 2Hz - 20 Hz in 1 Hz/step and 20 - 150 Hz in 5 Hz/step. Pulse Width 50uS - 300uS, 10uS/step. Output mode S, A, N, M, B, SD, MR Contraction Time 2 - 90 seconds Relaxation Time 2 - 90 seconds Ramp Time 1 - 8 seconds Timer 5 - 90 Minutes or continue. Electrode Detection Active in pulse width from 100uS to 300uS