The InTENSity Select Combo is a powerful, easy-to-use portable electrotherapy device. Complete with four waveforms, the unit gives you and your patients the flexibility to treat a variety of musculoskeletal issues. With a strong current of 105 mA, this innovative device combines TENS, EMS, Interferential and Microcurrent and comes complete with an AC adaptor. Simple-to-operate, portable electrotherapy device for pain management. Four waveforms, TENS, EMS, Interferential and Microcurrent. Comes complete with carrying case, two sets of lead wires, 9-volt battery, AC adaptor, manual and pack of four self-adhesive reusable electrodes. Power Source: Standard 9-volt battery or AC adaptor. One year warranty.