... .7 V, LiIon batteryMaximum current 0-80mA,1 mA(Adjustable) Max voltage 130VpOperation modes Gait, trainingWaveform Biphasic, rectangular wavePulse width 100 ... ,200,300(μs)Pulse rate 20- 45, 5Hz(Adjustable)Electrical stimulus ... source Tilt or plantar heel-pressure sensor i-walk 200 foot drop system