Combo Electrotherapy 3-in1R-C4A

30 preset TENS programs 27 preset EMS programs 3 preset MASSAGE programs 40 Intensity Levels Power Sources: 3.7 V Li-ion battery Pulse Rate: 2Hz-120Hz Waveform: Bi-phase square-wave pulse Output current: Max. 120mA (at 500ohm load) Output intensity level: 0 to 40 levels, adjustable Operating condition: 5℃ to 40℃ with a relative humidity of 15% to 93% atmospheric pressure from 700hPa to 1060hPa Storage condition: -10℃ to 55℃ with a relative humidity of 10% to 95% atmospheric pressure from 700hPa to 1060hPa