Twin Stim 2nd Edition – Digital Electrotherapy UnitOur most popular electrotherapy unit combines the features of the TENS 7000 and EMS 7500, offering 5 TENS modes and 2 EMS modes for personalized stimulation.Highlights: Dual channel and seven stimulation modes Adjustable timer and patient compliance meter Powerful 100 mA output with safety protection Sturdy belt clip and rubber side rails for easy handling Stimulation Modes: TENS: Burst / Normal / Modulation / SD1 / SD2 EMS: Synchronous / Alternate System includes: device, lead wires, 4 reusable self-adhesive electrodes, 9V battery, hard carrying case, and instruction manual.Technical Specifications: Pulse Width: 50-300 µs, adjustable Pulse Rate: 2-150 Hz, adjustable Pulse Ramp: 1-8 s Pulse Amplitude: 80 mA peak (500 Ω load) Contraction and Relaxation Time: 2-90 s Waveform: Asymmetrical Biphasic Square Pulse Timer: 1-60