This is a low profile, full strength, TENS & EMS combo unit. Very popular with professionals and individuals that do not want the bulk and wires of a typical TENS device. This mini TENS/EMS combo unit adheres directly onto your body with it's butterfly snap electrode. This unit comes with an additional lead wire to allow you to operate the device similar to a normal TENS device that has lead wires, if you choose. Offers the user the choice of 5 modes of TENS and 5 modes of EMS.