TENS 3000 Unit TENS 3000, Dual Channel, 3modes, Timer  Case includes: 1-TENS 3000 unit 1-(2/pk) WW3005 leads, 1-9 volt battery (TA9050-I), 1-(4/pk) E1F15 System includes device, lead wires, four self-adhesive reusable electrodes, 9V  battery, hard plastic carrying case and instruction manual Specifications: • Power Source: 9-volt battery • Modes: Standard, Modulate and Burst • Channels: Dual • Timer: 30 and 60 minutes or continuous • Pulse Width: 50-250 Microseconds, Adjustable • Pulse Rate: 2-150 Hz • Pulse Amplitude: 0-80 mA each channel • Waveform: Asymmetrical biphasic square pulse • One year warranty