The InTENSity Select Combo has 4 waveforms (Tens, EMS, IFC & Microcurrent) to give you the flexibility to treat a variety of musculoskeletal issues. This innovative device combines Tens, EMS, Interferential and Microcurrent, is 105 mA strong and comes with an AC Adapter. The InTENSity™ Select Combo: powerful, easy-to-use, elegant and portable. •Wave Form: .Tens - Monophasic Square .EMS - Biphasic/monophase square wave pulse, .Interferential - Biphasic Square, .Microcurrent - Monophasic Square •Pulse Rate: .Tens - 1-150 HZ, .EMS - 1-150 Hz, .Interferential - 4kHz, .Microcurrent - 1-150 •Pulse Width: .Tens - 50-300us, .EMS - 50-300us, .Interferential - 125us, phase dur. 250us, .Microcurrent - 2-200mS •Output Voltage: .Tens - Constant Current .EMS - Constant Current .Interferential - Constant Current .Microcurrent - Constant Current •Current: .Tens - 0-100mA .EMS - 0-100mA .Interferential - 0-80mA .Microcurrent - 0-700ua •Modes: .Tens - 4 .EMS - 3 .Interferential - 4 .Microcurrent - 3 •Timer: .Tens - 1-60 Constant .EMS - 1-60 Constant .Interferential - 1-60 Constant .Interferential Freq. 1-150 beats, .Microcurrent - 1-60 Constant Includes: Stimulator 2 leads 4 adhesive electrodes 1.5 x 1.5" 1 alkaline battery power adaptor instruction manual carrying case