Our most popular digital electrotherapy unit. The Twin Stim 2nd edition is an exact combination of our TENS 7000 and EMS 7500, which gives the user the choice of 5 modes of TENS and 2 Modes of EMS. This is the unit that the consumer will buy if given the choice! Twin Stim's features include, Dual Channel, 7 modes, Timer, Patient Compliance Meter, New Stronger 100mA output, safety amplitude cover, sturdy metal belt clip, rubber side railings for maximum handling.